Shut off switch DIY installation

Tiny
BRIGGS JHONNY
  • MEMBER
  • 2016 HYUNDAI TUCSON
  • 2WD
  • AUTOMATIC
  • 5,000 MILES
Good day.

How can I install a kill switch, either to the fuel pump relay or the ignition? Any help would be accepted.
Wednesday, May 6th, 2020 AT 12:45 PM

15 Replies

Tiny
KASEKENNY
  • MECHANIC
  • 18,907 POSTS
Any time you want to add a shut off switch to a component you need to interrupt the power supply or the ground.

I highlighted both wires. The way to do this is cut one of these wires and run a new wire for each side of the wire to a toggle switch. This way when you flip the switch on, it will complete the circuit but it will keep the circuit open when the switch is off. I diagrammed it on the last sheet using the ground wire but either wire will work.

Let me know if you have questions. Thanks
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Wednesday, May 6th, 2020 AT 4:52 PM
Tiny
BRIGGS JHONNY
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Thanks Kenny.
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Wednesday, May 6th, 2020 AT 7:25 PM
Tiny
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You are welcome. Please come back to 2CarPros in the future. Thanks
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Thursday, May 7th, 2020 AT 6:42 PM
Tiny
BRIGGS JHONNY
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Noted I will. Just awaiting the arrival of items ordered to proceed.
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Friday, May 8th, 2020 AT 6:10 AM
Tiny
BRIGGS JHONNY
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Kenny good day. Obviously the wires are connected to the fuel pump. Can they be sourced further forward to make the splice? Or just remove the rear seat and trace it FWD?
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Friday, May 8th, 2020 AT 6:14 AM
Tiny
KASEKENNY
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Good question. You can do it anywhere on that wire. Where ever is convenient to make the splice. Just make sure you are soldering and heat shrinking the connections so that you never have an issue.
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Friday, May 8th, 2020 AT 5:54 PM
Tiny
BRIGGS JHONNY
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Thanks Ken. All items ordered should arrive in a few days.
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Saturday, May 9th, 2020 AT 7:42 AM
Tiny
KASEKENNY
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Sounds great. Thanks for using 2CarPros. Please come back in the future if you need help with other things. Thanks
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Saturday, May 9th, 2020 AT 6:17 PM
Tiny
BRIGGS JHONNY
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Hello Kenny.
I have another question.

What about connecting a inline fuse and a relay to the circuit?
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Thursday, June 4th, 2020 AT 7:32 AM
Tiny
BRIGGS JHONNY
  • MEMBER
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A picture showing the wire connector to the fuel pump.
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Thursday, June 4th, 2020 AT 7:47 AM
Tiny
KASEKENNY
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This circuit already has a fuse so you don't need to add another. All you are doing is adding a switch so the circuit is protected.

Let me know if you need anything else. Thanks
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Thursday, June 4th, 2020 AT 8:24 PM
Tiny
BRIGGS JHONNY
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Great. Noted.
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Friday, June 5th, 2020 AT 6:31 AM
Tiny
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Let us know how it turns out or if you have more questions. If not, thanks for using 2CarPros.
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Friday, June 5th, 2020 AT 7:49 PM
Tiny
BRIGGS JHONNY
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Dear Kenny.
Good day/night or morning.
Hope all's well. Please to inform you that switch has been installed 6 days now. There are no issues. All seems to be working great.
The diagram was an excellent starting point.
Thanks again and be safe.
J
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Sunday, June 14th, 2020 AT 6:48 PM
Tiny
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Great update. Thanks for letting us know and for using 2CarPros. Please come back if you need more info in the future. We will be here to help. Thanks again.
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Sunday, June 14th, 2020 AT 7:25 PM

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