20v mega squirt problems!

[Eightysixer23]

Hey guys ! Need help with mega squirt 20v. I got this setup through a member on here who had it running perfectly on his car. I pulled it my self and I believe I plugged it all back in to my 86 the way I can recall it was in the previous owners car. I tried to start the car and I got it to crank but It wouldnt turn over completely.Started checking fuel pressure and it for some reason wasn't kicking on. After checking the wiring I was only getting 8v at the fuel pump. So I jumped it with a spare battery just to continue to try and start the car. Finally got fuel pressure and still nothing. I then found out that I have no power to the mega squirt unit at all. May I ask the dumb question as to where you guys are drawing the 12 v to the red wired pin on the mega squirt connector?? Right now I get no power to the mega squirt which gives me no spark or injector signal.

I have the mega squirt v2 msn2e
If you guys could please shed some light onto this I'd appreciate it!
Eightysixer23