Anyone know how to make a check lamp for the P8 ECU or failing that where to buy one.
What puzzles me is that there are three connections in the plug that comes out of the ECU.
One is the analogue earth but the other two are labelled up just as check lamp.
I would usually experiment but I dont want to fry the ECU.
Ignore this post.
After 10+ years of ownership I’ve just worked out that there is an led on the dash and a jumper plug under the saddle.
Onward and upward. Next job find out what’s causing a 1.3 fault.