Hi, folks. I have recently picked up an '86 XJ6 with a 350 Chevy already installed – is apparently a first gen motor, probably something from the '70’s, and I believe I’ve got a Quadrajet on top of it. The car runs remarkably well, and the swap appears to have been done competently, but I live in Albuquerque, at one mile of altitude, and the swap was done in Seattle, at sea level. The car runs on the mechanical pump on the side of the motor but, surprise surprise, it’s already vapor locking and it was only 50 some-odd degrees out yesterday. I own several cars from the '50’s and they have all had vapor-lock issues when brought to this environment, and I’ve always resolved it by wiring in an in-line electric pump near the tank. The XJ6 obviously came with an electric pump in the trunk, but it would have been too much pressure for a carb and it was removed during the swap. I have found the white/green wire that powered it back there, but the wire is not hot under any circumstances – no power at the inertia switch, and when I went to check the fuel pump relay, it isn’t there. The only relay on the firewall is for the starter, with 3 empty prongs next to it. What I would like to do, ideally, is find a (ignition switch controlled) source of 12v power for the fuel pump from the front of the car and run it down the white/green wire to the trunk. However, I don’t see the wire at the firewall, and I’m not sure what power source I could use without stealing from something necessary with unintended consequences. So, 2 questions: 1) Does anyone have any suggestions of circuits I could tap into, possibly at the fuse panel(s), to use to power an aftermarket pump? 2) Does anyone have a good idea of where to look for the white/green wire near the front of the car? I’m guessing it’s in one of the harnesses, but not sure which one to check.
Thanks to all in advance, and I’ll try to update as I work. The game is afoot!