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-   -   My science of speed fuel pump wire kit just melted my connector (https://www.s2ki.com/forums/s2000-forced-induction-142/my-science-speed-fuel-pump-wire-kit-just-melted-my-connector-1164586/)

riceball777 10-21-2016 05:53 PM


Originally Posted by Chitoki (Post 24088567)
I had a close issue. What we had discovered is that you must run the same gauge wire all the way directly to the pump. If you run a larger gauge and then connect it to a smaller gauge, then you will get resistance at that connecting point causing this.

The sos wiring does this. It's all the same size wire from the battery to the relay al the way into through the fuel pump hanger and into the fuel pump

RAIN H8R 10-22-2016 07:01 PM

It has been a while since I did fuel pump wiring. Is their a spare pin location where you can split the power to two pins, then merge them back together inside the tank?

flanders 10-23-2016 03:52 AM

Yes there is one spare next to the smaller fuel level pins.
I was thinking about using this but not sure it's a good idea to just upgrade one.

RAIN H8R 10-23-2016 06:46 PM

If you use the second pin, you could split the wire into two, then merge them back together inside the tank. That would eliminate the restriction of a single pin.

riceball777 10-23-2016 09:01 PM


Originally Posted by RAIN H8R (Post 24089978)
It has been a while since I did fuel pump wiring. Is their a spare pin location where you can split the power to two pins, then merge them back together inside the tank?

There is only 1 spare pin that is not used on the fuel pump hanger/plug. That would be a great idea if there was 2 extra pins.

flanders 10-23-2016 09:58 PM

The dirty solution would be to use the spare pin as an extra positive and then wire the fuel level negative together with the pump.

RAIN H8R 10-24-2016 01:17 PM


Originally Posted by riceball777 (Post 24090477)

Originally Posted by RAIN H8R' timestamp='1477191716' post='24089978
It has been a while since I did fuel pump wiring. Is their a spare pin location where you can split the power to two pins, then merge them back together inside the tank?

There is only 1 spare pin that is not used on the fuel pump hanger/plug. That would be a great idea if there was 2 extra pins.

Time to source a spare male and female pin. I'm sure I can find them online, but I guarantee SOS has them. I'd call and ask for a set to be mailed to you

RAIN H8R 12-12-2016 10:01 AM

Riceball, what did you end up doing with this issue?

riceball777 12-12-2016 05:32 PM


Originally Posted by RAIN H8R (Post 24118714)
Riceball, what did you end up doing with this issue?

i just replaced everything. I called sos and they charged me $15 for a new set of fuel pump pins. I went on eBay and bought a used oem fuel pump hanger with the oem plug attached and just with the wires cut off. That was like $50. I repined the oem fuel pump housing plug again with the sos pins and 12 gauge wire. Everything is the same. I'm still using the walbro 450 pump. So far the car has been fine for the past few months. But then again my old fuel pump wireing was fine for many years with tens of thousand of mines all over 600whp. Sos says that they have never seen this issue and that it was caused most likely by a bad crimp.

RAIN H8R 12-13-2016 06:52 AM

Good to hear you were able to resolve the issue, for under $100.

did you solder the crimped pins? this may aid in preventing a nuclear meltdown in the future.

I just ordered this kit for my car yesterday. I'll see what I can come up with as a preventative measure.


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