Question about upfitter switches
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Tuned
Joined: Aug 2005
Posts: 305
Likes: 1
Question about upfitter switches
Since the upfitters only work when the ignition is in the run(on) position, are there any negative effects to having the key in the on position without the engine running? For example, can it hurt any components such as glow plugs or other electronics? I often use my back up lights with the engine off, but since I cant run the upfitters while the keys are in the accessory position, I have to leave the keys in the run position. I hear the glow plugs can draw like 90amps too.
Posting Guru
Joined: Dec 2006
Posts: 1,391
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From: NorCal
You can modify the upfitter switches so that they will work at all times!
You just need to pull the upfitter relay out of the main fusebox and replace it with a jumper wire between the terminal that has full time power and the terminal that feeds the upfitter switches.
You just need to pull the upfitter relay out of the main fusebox and replace it with a jumper wire between the terminal that has full time power and the terminal that feeds the upfitter switches.
Posting Guru
Joined: Dec 2006
Posts: 1,391
Likes: 1
From: NorCal
You only need maybe 12-14ga wire to do this.
The relay in the main fusebox is for activating the switches only, so there is not much load on it.
Each upfitter switch has it's own separate relay to power whatever load you are using it for.
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