Outer Limits 4x4 Board

Done a vp v6 conversion on my rocky been drivin round for a while now with no dramas.
My question is should the ecu have a constent 12v supply or just ign to the pink wire.
And how do you wire up the CHECK ENGINE light. im running all the original holden relays/fusable links etc.

CHEERS CRAIG

Umm there should be a terminal of the ecu that runs the check engine light.

Get yourself a wiring diag to see or ring up marks im sure they can help you. They probly have a plug in light for it aswell.