Thread: Crossed battery cables!! Help needed

crossed the battery cables and blew 100A fuse. Replaced fuse and everything works just dandy except the fuel pump will not come on and there is no pulse at the injectors nor the coil packs. The relays and fuses all check out good. The only thing I have kinds found is the 4 ignition signal wires at the ecu are dead all the time. Oh and I lost my speakers too if that helps.
I would really appreciate any help anyone can give.
Its a 95 240 with a s13 sr blacktop. Harness done by wiring specialties and worked fine before. Thanks

im sure u did, but did u check all the other fuses under the dash and under the hood?

check the ecu. if you have a spare, id try it.

Yeah man I even went ahead and replaced all the fuses and relays just to be certain. Wats btween the fuel pump relay and fuse, and the actual fuel pump?

I will second what Nissanguy said. Make sure and check all your fuses under the dash. And under the hood. and pray its not the ecu

exactly what i was going to say....

when i did my 1.6 to 2.0 swap we did everything except rewired a couple wires by the ecu

fuel pump wouldnt come on
no spark

but everything else was fine

turned out to be the wires to the relay on the ecu

try that relay thats sits on top of the ecu, possibly even the ecu.

ill have to search the garage for one, i know i have a bunch if i find one tonight ill pm u

Simply re-iterating what is said above. This is a relay usually found clipped behind the ashtrays in a 95-98 200sx. (I know you have a 240). Following the end of ECU cable inside your car will lead you to this...

thanks for all the help but its still a mystery. Are there any fusible links within the harness its self? I know trying another ecu would be the best thing but I live in a small redneck town so I'm all by myself here.