Upfitter Switch Question
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Trailering
Joined: Feb 2015
Posts: 18
Likes: 0
From: IL
Upfitter Switch Question
I have a 2018 F250. I have the Morimoto headlights. I want to hook the daytime running lights to the upfitter switches. There is only 1 red wire. Do I have to ground it somehow or is it ok to hook the wire directly to the upfitter wire with no ground?
TIA
TIA
Lead Driver
Joined: Nov 2005
Posts: 8,477
Likes: 4,972
Do those headlights have a separate DRL in them?
Otherwise, I would think you may get a backfeed from running a new power supply into the headlight circuit, could screw things up.
If the DRL is a separate light, then just run the upfitter wire to the hot lead you found, but it needs to be separated from the rest of the light harness.
Otherwise, I would think you may get a backfeed from running a new power supply into the headlight circuit, could screw things up.
If the DRL is a separate light, then just run the upfitter wire to the hot lead you found, but it needs to be separated from the rest of the light harness.
Mountain Pass
Joined: Dec 2017
Posts: 180
Likes: 21
Yes, you can do that. I have a 2017 F250 that I was having all sorts of problems with my Morimoto DRL going to the fuse block, so I just hooked that single wire to aux 3 and haven’t had a problem since then.
Tuned
Joined: Nov 2019
Posts: 290
Likes: 19
From: NE Washington
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