hot wire
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Senior User
Joined: Jun 2004
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From: 39 24'34.8" N 88 47'51" W
hot wire
From the electrical terminal box by the master cylinder,where can you get a wire that is hot at all times and is still fused? Second question, I'm installing a battery inside my trailer to run the inside lights when my truck is not hookup to the trailer. I'm going to the terminal box on the trailer so the wire will still be fused, this wire will be battery + on the trailer plug, so will I damage anything on the truck when its connected to the trailer?
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Joined: Jan 2001
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From: Virginia
I would not piggy back onto a fuse that is already there. For your application, I would go buy a circuit breaker at the parts store. Run a short piece of 10 guage wire from the battery + or the starter solenoid/battery + to the circuit breaker which you can mount on the inner fender. Then from the circuit breaker, run the 10 guage wire down the frame to the rear plug.
If you hook it up like above, the circuit breaker can trip if there is a problem, and then it will automatically reset itself, so you don't have to carry fuses around all the time. The one thing that will happen though, is if you use the trailer lights, the trailer lights will run down the trailer battery as well as the truck's battery. If you do not want this to happen, you can buy a battery isolator. Put this inbetween the truck's battery and the trailer battery, and the truck will charge the trailer battery, but the trailer lights will not discharge the truck's battery.
If you hook it up like above, the circuit breaker can trip if there is a problem, and then it will automatically reset itself, so you don't have to carry fuses around all the time. The one thing that will happen though, is if you use the trailer lights, the trailer lights will run down the trailer battery as well as the truck's battery. If you do not want this to happen, you can buy a battery isolator. Put this inbetween the truck's battery and the trailer battery, and the truck will charge the trailer battery, but the trailer lights will not discharge the truck's battery.
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Joined: Oct 2004
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Check on your tow package. I think you may have a trailer + connection as part of package that is intended to charge a trailer battery. It has a relay that will disconnect the + lead when the ignition is off. The hookup you are seeking can drain your truck battery and leave you dead.
The '93 tow package has this relay and I believe it is still the case.
The '93 tow package has this relay and I believe it is still the case.
