The fuse beside the battery keeps blowing. From what I can gather this is either a bad pump or a short in the wiring somewhere shorting to ground. fuel pressure is fine, but it's regulated down to carb pressures so Im not sure if drops in pressure would be readily apparent to me.

All of the wiring I can find looks fine. I dont see any evidence of shorts near the relay and I get infinite resistance to ground with a meter. I was told there's some sort of "bulkhead" connector that goes through the interior of the car somewhere? Where can I find this to see if it's the problem?

I've gone through 4 fuses now trying to trace down the problem but now it wont manifest itself right away. I've got to find this before it ends up stranding me somewhere again.

 

This part of your description intrigued me , and here's why ;

In normal operation , the fuel pump on our cars regulates to the pressure needed by the injectors by dumping the excess pressure back to the fuel tank in the form of the return line . Thereby , the pump is never "dead ended" . Since you now have a carb setup , if your using the kind of regulator that has no return to the tank (common on some carb application regulators) you are dead ending the pump except for the few PSI that are filling your float bowl . Causing the pump to run this way will overheat it and cause blowing fuses in exactly the manner you describe . If your regulator does have a return to the tank , have you checked it for blockages ?

Just my random thought when I read your problem , and I hope ya get it sorted out soon

 

It's a 3 port regulator set up with a return line. The pump doesn't deadhead at all. As far as blockages... Im not sure how to "Check" for that, but it's definitely working. It's supplying fuel the carb and the pressures are steady. I was wondering if a really clogged fuel filter could cause this. But Im just having a hard time believing it could be something like that and no other symptoms show up. No trash in the carb, etc. Definitely possible though.

 

Anyone have any idea what a fuel pump resistance test is? I found the connector above teh axle but Im not sure what I should be testing and what numbers mean pass/fail.