If the rear wire off the ballast resistor has 9 volts or more and the pump ain't runnen' the battery probably isn't your main problem. A battery rests at 12.7 at room temperature. 12.4 might not be so bad. I'd pull it off and jump to it, or check it with a dvm. (that rear wire).Maybe I missed something, but if my pump wasn't commming on I'd have checked power to in ...in seconds. Bad ballast resistor, it's connections, or the connections on that second relay back, (out of the 4 there), maybe, but if there is power there when you first turn on the ign and the pump isn't going, I'D suspect the pump, or the wire between there and it.

 

I've checked the pump/ balast resistor extensively, much on the same lines you outlined here. The pump was receiving the power only when on start but not on accessory (where it should prime). A marginal battery is the last thing on the list to check, the pump is working (verified with leads) and from the relay block, basalt resistor and all the way to the last connector untilled you hit the pump, voltage was coming through.

Not only this, but at the same time my battery does need to be replaced, it has given me issues before. Ill update y'all tomorrow after a new battery and more tinkering

 

New battery...did nothing, but I needed a new top post regardless. Side post was getting old.

Fuel pump relay was the culprit, was replaced 2x I guess the sfirst replacement relay was a dud but we heard it click, so we thought it was working...apparently not.

But she's back on the road and gonna be in the Christmas parade Friday

Thanks for yalls help

Keepa jeepin!

 

Cool. Thanks for the update. And great job of sticking with it BTW.