RB20 electrical issues HELP - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

lrb99 · 05-31-2011, 10:04 PM

I just bought this car I had a KA-t now I have an RB and I am really bad at wiring.
It will blow the main 75amp fuse I'm pretty sure thats to the alternator I looked for something grounded out but no evidence of anything bad so I looked for something spliced into the ignition and found a "Valet" box not really sure what to do i cannot even get it to turn over now and it was yesterday please help!!!!! please please post the wiring on here or if you have any ideas at all I would appreciate so much thanks LRB

Yellow4g63 · 06-01-2011, 03:31 PM

SR20DET Wiring Harness Services if u have a S13 with the RB they sell a new harness that's just plug and play. If not better google Rb20 wiring. It sounds like you have a big short some where in the harness.

Pandapants · 06-01-2011, 05:23 PM

Make sure youre not grounding a power wire, hence the blown 75amp fuse. The lower harness is a good place to look bc it's easy to mix up some pos/neg terminals.

lrb99 · 06-01-2011, 08:44 PM

I got it to stop blowing the fuse and crank over. I just got this car and I found a alarm wired into the ignition and took that out and some one tied some rigged up auto door locks into the ignition. I dont know why but they did took that out and now the fuse is good so hopefully its bad plugs or something like that now. The guy told me he put a new crank sensor or a cam angle sensor but they dont look new I have to keep playing with it I guess.It cranks good . idk

Acecool · 06-01-2011, 09:08 PM

If you need inexpensive 75 amp alternator fuses shoot me a pm! I have an entire bag full.

05-31-2011, 10:04 PM	#1
lrb99 Zilvia Addict Join Date: Apr 2010 Location: Lansing, MI Age: 38 Posts: 600 Trader Rating: (3) Feedback Score: 3 reviews	RB20 electrical issues HELP I just bought this car I had a KA-t now I have an RB and I am really bad at wiring. It will blow the main 75amp fuse I'm pretty sure thats to the alternator I looked for something grounded out but no evidence of anything bad so I looked for something spliced into the ignition and found a "Valet" box not really sure what to do i cannot even get it to turn over now and it was yesterday please help!!!!! please please post the wiring on here or if you have any ideas at all I would appreciate so much thanks LRB __________________ .........Whipthis Drifting.........

06-01-2011, 03:31 PM	#2
Yellow4g63 Zilvia FREAK! Join Date: Jan 2003 Location: Socal Posts: 1,454 Trader Rating: (5) Feedback Score: 5 reviews	SR20DET Wiring Harness Services if u have a S13 with the RB they sell a new harness that's just plug and play. If not better google Rb20 wiring. It sounds like you have a big short some where in the harness. __________________ 95 240sx RB20 415whp 91 Nx2000 VVL yo

06-01-2011, 08:44 PM	#4
lrb99 Zilvia Addict Join Date: Apr 2010 Location: Lansing, MI Age: 38 Posts: 600 Trader Rating: (3) Feedback Score: 3 reviews	I got it to stop blowing the fuse and crank over. I just got this car and I found a alarm wired into the ignition and took that out and some one tied some rigged up auto door locks into the ignition. I dont know why but they did took that out and now the fuse is good so hopefully its bad plugs or something like that now. The guy told me he put a new crank sensor or a cam angle sensor but they dont look new I have to keep playing with it I guess.It cranks good . idk __________________ .........Whipthis Drifting.........

06-01-2011, 05:23 PM	#3
Pandapants Zilvia Junkie Join Date: Mar 2008 Location: SoFla Age: 35 Posts: 302 Trader Rating: (4) Feedback Score: 4 reviews	Make sure youre not grounding a power wire, hence the blown 75amp fuse. The lower harness is a good place to look bc it's easy to mix up some pos/neg terminals.

06-01-2011, 09:08 PM	#5
Acecool Join Date: Sep 2006 Location: Charleston Age: 40 Posts: 48 Trader Rating: (0) Feedback Score: 0 reviews	If you need inexpensive 75 amp alternator fuses shoot me a pm! I have an entire bag full.