Is it possible to take a hot wire ran directly from my battery to my fuel pump?

Tiny
KIMBERLY1227
  • MEMBER
  • 2004 CHEVROLET 1500
  • 4.3L
  • V6
  • 2WD
  • MANUAL
  • 3,456,277 MILES
Would I be able to take a hot wire ran directly from my battery to my fuel pump so I can have a switch to manually turn my fuel pump on/off? Would my truck still run if I did this?
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Wednesday, October 13th, 2021 AT 12:30 PM

4 Replies

Tiny
SQM
  • EXPERT
Hello,

It is possible to run wires directly form the battery to the fuel pump and have a manual switch. And yes, the vehicle will run given there is no other issues. However, I would suggest against it, as it is not a good long term solution.

Can you tell me what issues you are having with the fuel pump?
Is it not getting power?

https://www.2carpros.com/articles/how-a-fuel-pump-works

Let me know.
Thank you.
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Wednesday, October 13th, 2021 AT 1:28 PM
Tiny
KIMBERLY1227
  • MEMBER
No, the fuel pump isn't getting power. Could it be the ignition switch causing it not to get the power because I put a new ignition switch in it, and it started not getting power to the fuel pump.
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Wednesday, October 13th, 2021 AT 5:04 PM
Tiny
SQM
  • EXPERT
If it started this issue after the ignition switch replacement, then it is likely the issue is with the switch. Could have a shorted pin or not getting proper connection.

Also have you checked the fuel pump relay?
It is in the under-hood fuse box.

https://www.2carpros.com/articles/how-to-check-an-electrical-relay-and-wiring-control-circuit
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Wednesday, October 13th, 2021 AT 5:46 PM
Tiny
CARADIODOC
  • EXPERT
Hi folks. SQM is right about running a hot wire being dangerous. That can lead to a serious fire hazard and liability issues. Might I suggest considering whether the ignition switch hasn't been learned or programmed, and the system is in theft mode? That shuts down a number of systems including the fuel pump. Hot-wiring one circuit isn't going to get the others up and running. If you can hear the hum of the fuel pump for one or two seconds right after turning on the ignition switch, that proves the entire pump circuit is okay and the Engine Computer has control of it. That makes the fuel pump a valuable observation or clue, but not the suspect circuit.
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Wednesday, October 13th, 2021 AT 6:00 PM

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