Hey, what's up everyone? I'm swapping in a 96 LT1/4L60E combo from a Cadillac hearse into my 89 IROC. I read several write ups on the swap and the info over on LT1swap.com. I bypassed the starter relay, and I'm running a vats bypass module. I have ign, starter figured out. I have the P/N ground wire from engine ground into the bulkhead hooked up, the feed from P/N (floating ground when in P/N.) I get constant 12v to the fuel pump relay. When I turn the key into the start or run positions, I can see the signal from the module going to the ecm. I don't get 12v coming out of the relay or seeing the 5v? Signal reference from the ecm to the relay at key on. I've tried the other signals from the bypass module after a 2 minute wait, is this long enough to let the ecm clear? Any advice would be much appreciated! Thank you

I made some progress on my swap. Now I'm trying to power up the fuel pump. I'm using the fuel pump relay from the lt1 swap. I'm getting power out of the relay, I need to know what wire to connect to on the c100 connector. Is it brown/ white or grey? Does the fuel pump ground on the body somewhere or do I need to provide ground as well?
I have a diagram from Austin's third gen and appears the relay applies power to a grey wire that runs to the pump, is that correct? Tia