Hi all. I stripped down my mk2 1.8t for a bit of a refresh including removing the q-peng ECU &loom. I thought I did a good job labeling everything but I missed one. It's a single green& white wire which came from the cabin. I'm 99% sure it's for the shift rev limiter light. However I can't seem to make the bugger work. IV tested the led and it's ok. IV swapped the positive and negative incase I have them wrong but no luck and triple checked the connections/earth I assume 12v is triggered from the ECU when the correct rpm is reached but I may be wrong. If anyone has a wiring diagram handy or can explain how the circuit works I'd be grateful. Cheers