<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">Found some nice pics that might help:<div><br></div><div>Tesla Roadster OBDII port (courtesy fuzzylogic), drivers side centre console:</div><div><br></div><div><img border="0" alt="Name: tesla_airflow.jpg
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Size: 110.7 KB" id="f5605608-b740-4b67-ba9c-10df078f83f1" height="684" width="912" apple-width="yes" apple-height="yes" src="cid:F792FCFC-CC53-47F2-9274-87C4AD340B49"></div><div><br></div><div>Tesla Roadster DIAG connector (courtesy of scott451), passenger footwell:</div><div><br></div><div><img border="0" alt="" id="a1394fcc-9d25-4670-8c55-22b6ab734a0f" height="480" width="640" apple-width="yes" apple-height="yes" src="cid:D7CDF05C-D119-439D-ACA4-ADC7AE8BF271"></div><div><br></div><div>Regards, Mark.</div><div><br><div><div>On 13 Nov, 2012, at 8:43 AM, Mark Webb-Johnson wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><div>Brian,<br><br>The Tesla Roadster has two connectors - (1) a proprietary connector for 3 CAN buses that we call DIAG, and (2) an OBDII port.<br><br>OVMS uses the DIAG connector to get access to a single CAN bus that contains the messages we need.<br><br>I recall that by law, all cars sold in USA must have an OBDII connector and it is found close to the steering wheel (something like within 2 feet?).<br><br>Regards, Mark.<br><br>On 13 Nov, 2012, at 6:08 AM, HONDA S-2000 wrote:<br><br><blockquote type="cite">Just to clarify, would this work for the Tesla Roadster? Looking at the photo, the connector looks different. Does that mean the Tesla does not have an OBD2 connector? Is it the older OBD? Is it something that only Tesla uses for diagnostics? Sorry for all of the questions, but I've never connected anything to OBD ports on any of my cars, even though I'm aware of lots of products that are available. The OVMS is my first.<br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite">Brian<br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite">On Nov 12, 2012, at 03:09, Mark Webb-Johnson wrote:<br></blockquote><blockquote type="cite">I've found a couple of manufacturers willing to do this for a reasonable price (at a quantity of perhaps 50 to 100 units).<br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite">Is the specification below ok? Any problems?<br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite">Regards, Mark.<br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite">On 11 Nov, 2012, at 1:36 PM, Mark Webb-Johnson <<a href="mailto:mark@webb-johnson.net">mark@webb-johnson.net</a>> wrote:<br></blockquote><blockquote type="cite"><blockquote type="cite">OK, so I think the pinouts we require are as per Michael B's diagram:<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite">J1962-M<span class="Apple-tab-span" style="white-space:pre"> </span><span class="Apple-tab-span" style="white-space:pre"> </span>DB9-F<span class="Apple-tab-span" style="white-space:pre"> </span><span class="Apple-tab-span" style="white-space:pre"> </span>Signal<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite">4<span class="Apple-tab-span" style="white-space:pre"> </span><span class="Apple-tab-span" style="white-space:pre"> </span>3<span class="Apple-tab-span" style="white-space:pre"> </span><span class="Apple-tab-span" style="white-space:pre"> </span>Chassis/Power GND<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite">6<span class="Apple-tab-span" style="white-space:pre"> </span><span class="Apple-tab-span" style="white-space:pre"> </span>7<span class="Apple-tab-span" style="white-space:pre"> </span><span class="Apple-tab-span" style="white-space:pre"> </span>CAN-H<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite">14<span class="Apple-tab-span" style="white-space:pre"> </span><span class="Apple-tab-span" style="white-space:pre"> </span>2<span class="Apple-tab-span" style="white-space:pre"> </span><span class="Apple-tab-span" style="white-space:pre"> </span>CAN-L<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite">16<span class="Apple-tab-span" style="white-space:pre"> </span><span class="Apple-tab-span" style="white-space:pre"> </span>9<span class="Apple-tab-span" style="white-space:pre"> </span><span class="Apple-tab-span" style="white-space:pre"> </span>+12V Vehicle Power<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite">A right angle J1962-M plug and about 1metre cable should be ok.<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite">This one cable should support both Twizy and Volt/Ampera, and also any ODBII car with an ODBII compliant CAN bus.<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite">Does that sound ok?<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite">On 11 Nov, 2012, at 7:50 AM, Michael Balzer <<a href="mailto:dexter@expeedo.de">dexter@expeedo.de</a>> wrote:<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite">For the record: I now have connected GND to both 4+5 on the OBD2 plug, works as well.<br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite">Am 10.11.2012 19:57, schrieb <a href="mailto:mikeljo@me.com">mikeljo@me.com</a>:<br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite">i use this pinout:<br></blockquote></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite">Primary Data Link Connector- (DLC) X84 *Under drivers side of IP<br></blockquote></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><br></blockquote></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite">Pin 1 is Low Speed GMLAN (SWCAN ~33.3kbps) - Body Electrical Services Only Pin 2-3 Unused<br></blockquote></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite">Pin 4 chassis ground (for scan tool)<br></blockquote></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite">Pin 5 data reference ground<br></blockquote></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><br></blockquote></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite">Pins 6(+) & 14 (-) High Speed GMLAN- Primary Powertrain Bus (DWCAN ~500 kbps) Pins 7-11 Unused<br></blockquote></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite">Pins 12(+) & 13(-) High Speed GMLAN- Chassis Expansion Bus (DWCAN ~500 kbps) Pin 15 Unused<br></blockquote></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><br></blockquote></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite">Pin 16 B+ (for scan tool power)<br></blockquote></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><br></blockquote></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite">OBDII Sub-D Signal<br></blockquote></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite">16 9 +12V<br></blockquote></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite">4 6+3 GND-Chassis<br></blockquote></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite">6 7 CAN_H<br></blockquote></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite">14 2 CAN_L<br></blockquote></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><br></blockquote></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite">I connect 6 and 3 at the Sub-D side together.<br></blockquote></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite">So it looks like we can use the same Cable (for the Primary Can Bus in the Volt). >> Fasttech?<br></blockquote></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><br></blockquote></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite">Am 10.11.2012 um 06:47 schrieb Mark Webb-Johnson <<a href="mailto:mark@webb-johnson.net">mark@webb-johnson.net</a>>:<br></blockquote></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite">Yes, chassis GND vs signal GND, but can is differential, so no GND needed for the signal. We only need GND for 12V power. For vehicles, I think chassis GND is ok.<br></blockquote></blockquote></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><br></blockquote></blockquote></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite">I think Volt bus we are using is on the same pins:<br></blockquote></blockquote></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><br></blockquote></blockquote></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><a href="http://www.evtools.info/ChevyVoltOBD2CAN.html">http://www.evtools.info/ChevyVoltOBD2CAN.html</a><br></blockquote></blockquote></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><br></blockquote></blockquote></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite">Maybe 1 cable can do both?<br></blockquote></blockquote></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><br></blockquote></blockquote></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite">On 10 Nov, 2012, at 12:18 PM, Michael Balzer <<a href="mailto:dexter@expeedo.de">dexter@expeedo.de</a>> wrote:<br></blockquote></blockquote></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite">yes, that's chassis ground -- shouldn't it be? I interpreted the OVMS GND as the ground for the supply voltage (12V), as the CAN bus has its dedicated "low" line.<br></blockquote></blockquote></blockquote></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><br></blockquote></blockquote></blockquote></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite">I just looked up some OBD2 sites: 4+5 normally are the same. One page says an OBD2 cable should have identical potential on 4 and 5 to ensure proper function. Another OBD2 cable I bought connects them, so maybe for a general product GND should connect both, but I don't think there's a difference on the car side... normally.<br></blockquote></blockquote></blockquote></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><br></blockquote></blockquote></blockquote></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite">But I've also seen some info on non standard OBD2 plugs, also for some GM and Opel cars, having other signals where the CAN bus should be, so I'm also interested in your pinout, Michael J.<br></blockquote></blockquote></blockquote></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><br></blockquote></blockquote></blockquote></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite">Am 10.11.2012 04:23, schrieb Mark Webb-Johnson:<br></blockquote></blockquote></blockquote></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite">One question: you have GND on pin #4 (odb). I have that shown as chassis ground, not signal ground. Is that correct?<br></blockquote></blockquote></blockquote></blockquote></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><br></blockquote></blockquote></blockquote></blockquote></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite">Michael J: is that the same connector and pins as you are using for the Volt?<br></blockquote></blockquote></blockquote></blockquote></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><br></blockquote></blockquote></blockquote></blockquote></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite">Regards, Mark<br></blockquote></blockquote></blockquote></blockquote></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><br></blockquote></blockquote></blockquote></blockquote></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite">On 10 Nov, 2012, at 2:16 AM, Michael Balzer <<a href="mailto:dexter@expeedo.de">dexter@expeedo.de</a>> wrote:<br></blockquote></blockquote></blockquote></blockquote></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite">1) I just created an OVMS to OBD2 cable image and checked it in:<br></blockquote></blockquote></blockquote></blockquote></blockquote></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><a href="https://github.com/dexterbg/Open-Vehicle-Monitoring-System/commit/a7c3a3e8f12d7759b896bb75c8e570ebc10ec11a">https://github.com/dexterbg/Open-Vehicle-Monitoring-System/commit/a7c3a3e8f12d7759b896bb75c8e570ebc10ec11a</a><br></blockquote></blockquote></blockquote></blockquote></blockquote></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite">As OBD2 is standard incl. CAN pinout, this should be valid for any OBD2 port, so could be added to the FastTech OVMS product line. It's not a standard cable, or at least none I know of.<br></blockquote></blockquote></blockquote></blockquote></blockquote></blockquote></blockquote></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite">_______________________________________________<br></blockquote><blockquote type="cite">OvmsDev mailing list<br></blockquote><blockquote type="cite"><a href="mailto:OvmsDev@lists.teslaclub.hk">OvmsDev@lists.teslaclub.hk</a><br></blockquote><blockquote type="cite"><a href="http://lists.teslaclub.hk/mailman/listinfo/ovmsdev">http://lists.teslaclub.hk/mailman/listinfo/ovmsdev</a><br></blockquote><br>_______________________________________________<br>OvmsDev mailing list<br><a href="mailto:OvmsDev@lists.teslaclub.hk">OvmsDev@lists.teslaclub.hk</a><br>http://lists.teslaclub.hk/mailman/listinfo/ovmsdev<br></div></blockquote></div><br></div></body></html>