Off the bat ,when it comes to automotive electrical in general, I'm a bit of a lost cause. I'm having a starting issue with my early 90's Integra. When I say starting issue, I'm not getting the fuel pump prime step when I turn the key. I've done my reading online and have checked all the obvious things that most everyone suggests (main fuel relay, ignition switch, battery, grounds, ecu, etc). I've metered all the connectors to and from the relay and ignition switches and fuse boxes for continuity and voltage and everything seems to check out. My only guess at this point is there is either a ground/short somewhere that is causing the relay to not prime the fuel pump. I'm just not sure at this point how to find the problem and I'm second guessing myself if I've done all the checks properly.
Anybody out there that can offer suggestions and/or help? I'm completely stumped and frustrated at this point.
I should also add that the car has been modified so some of the wiring isn't necessarily stock.