Hi all, Anybody got any experience with HUDs?
I bought this simple HUD from FastTech: https://www.fasttech.com/products/9686283 When connected direct to the OBDII port, it powers on and seems to function. When I connect it to the OVMS module with the standard https://www.fasttech.com/products/9652027 the HUD doesn't even power on.
It's stated draw is 200ma which afaict should be fine. I'm pretty sure the 12V power is getting to PIN 16... though I will try again to make sure. I only have a crappy little Multimeter.
On the Troubleshooting it states: "HUD only available for cars with OBD2 and EU-OBD agreements ... HUD Products don't support JOBD and OBDI protocol."
The OBD HUD connector has the following pins:
4* Chassis
5* Signal Ground
6 CAN High
7 *ISO9141 K Line*
14 CAN Low
15 *ISO9141 L Line*
16 Vehicle Battery +ve
- Long pins
These are the standard OVMS supplied pins:
4 Chassis Ground
5 Chassis Ground
6 CAN H (Primary)
14 CAN L (Primary)
16 +12V
So obviously the main difference is the lack of K / L lines in the OVMS ... but I wouldn't have thought that would have prevented it from powering up.
Does anybody have any thoughts on this?
//.ichael