So after having my battery die(brand new red top) from infrequent driving (1-2weeks) i had starting issues. Basically even after a full charge on the battery my fuel pump was not coming on. It’s a Denso Supra FP with less than 2000 miles. This got me looking around the FP relay for a short and sure enough when I put a test light to the 4 areas the relay would make contact I get a light on the two sides that should light up but also a light on one of the two that I believe should not is this correct?. The line in question is a white wire with a red stripe about 3x thicker than the majority of the wires in the harness. Iv seen some post about bypassing the relay but wasn’t sure if it’s was the best solution for the problem. Any suggestions or help would be appreciated as iv chased the wire as well as I could with no luck finding the issue. The test light will show a short even with the pump disconnected as well as just about every fuse I could find to pull and that’s with the BTN fuse pulled as I know that fuse always draws a current for the CPU.

I do however of course out of all the books I have I cannot seem to find the one with the wiring diagram. The main focus I have for thinking it is a electrical issue is that my battery started dying the same time this issue came up and I’m getting a test light to light up on the negative side of my fuel pump relay terminal when the relay is pulled out. Is the room fuse the one that keeps power to the cpu when the car is off? Thanks for the reply.