Train horns
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2nd Gear
Joined: Jul 2023
Posts: 2
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From: FL
Train horns
I have a 2015 F250 Lariat... I installed the horns tank and compressor all of my air lines are in and now time to wire it. I am looking for a wire to connect to for the compressor that is controlled by the key. I found a wire on the passenger side that I think will work but I don't want to tap into something without knowing what it is. I have already brought my wire into the cab on the passenger side and have plenty of wire to move over to the driver's side of needed. The wire I was looking at is behind the glove compartment and I believe is for the blower motor but not 100% sure. The wire is yellow and green and the thickest wire in the plug. When I turn the power off to the a/c it turns off and when I turn the key off it turns off. Any help would be awesome.
Tuned
Joined: Aug 2022
Posts: 388
Likes: 87
Do you know how to put in a relay? I would run the compressor power line straight to the battery through a relay. Then run the wire that actuates the relay to the wire you described. This way that wire only actuates the relay and does not power the compressor.
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2nd Gear
Joined: Jul 2023
Posts: 2
Likes: 0
From: FL
Yes I do... I was following the instructions and didn't even consider that. I think I even have one in the junk drawer that I didn't need with another project. Thanks.
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lshort
1948 - 1956 F1, F100 & Larger F-Series Trucks
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Jun 17, 2023 07:38 PM
