First off I just want to say thanks to all of you for the great information on this subject!!! Immensely helpful. Very cool of you guys to take the time to share.
I know this is an old thread, but I'm trying to build one of these for a Land Rover Discovery and I just wanted to ask a few questions as I've literally never built a board like this before.
1) Can anyone check my design here and make sure it looks right?
2) What gauge wire are you guys using to connect to the O2 and to the DME?
**NOTE: I'm just going to be point-point soldering on a prototype board - I'm not having custom boards made or anything, just drew this to give myself a guide. I'm using NielM's part list with a DPDT relay and single potentiometer.
I have experience soldering electronics (repairs and modifications) and I'm comfortable with that, I've just never done anything quite like this and wanted to make sure I'm interpreting the component documentation correctly and understanding the circuit fully. Fun learning experience so far!
