high beam wire
Cargo Master
Joined: Jan 2011
Posts: 2,791
Likes: 8
From: Edmonton AB, Canada
I read what infound in here. Guess that's backwards lol
https://www.ford-trucks.com/article/...r_Brights.html
https://www.ford-trucks.com/article/...r_Brights.html
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Senior User
Joined: Dec 2010
Posts: 295
Likes: 1
From: Ca.
Well i wouldn't trust that article. That person is talkin usin #18 gauge wire and doing a headlite wire upgrade. I would never use the same gauge as what was stock. Nothing smaller than #14 for me.
Post Fiend
Joined: Nov 2005
Posts: 7,437
Likes: 4
From: Charles Town, W bygod Va
The 18 ga wire is used to turn the relays on only, the current that travels to the headlight is all 14 ga.
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Senior User
Joined: Dec 2010
Posts: 295
Likes: 1
From: Ca.
Or it can be 12 G.too. Although i feel that 14 G. is plenty enough for most applications that run bulbs of less than 120 W. for both filaments glowing when brites are on. Amp draw would then be about 8 A. going thru 14 G. wire that is rather short since the upgrade would be close to the power source and the wires to headlites are not very long either. 8A. in to relay and 8A. out to headlites.
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