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TRAILER BRAKE WIRING QUESTION

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Hawkeye58
Reg. Feb 2014
Posted 2017-08-30 9:26 PM (#170459)
Subject: TRAILER BRAKE WIRING QUESTION


Member


Posts: 11

Location: Pontiac, IL
I HAVE A 2004 HART BUMPER PULL TRAILER THAT HAD A 6 PIN CONNECTOR PLUG. I DECIDED TO INSTALL A 7 PIN PLUG TO MATCH THE PLUG ON MY 2008 FORD F350. HOWEVER, I CANNOT FIND A DEDICATED WIRE FOR THE ELECTRIC TRAILER BRAKES ON THE TRAILER. THE 6 WIRES FROM THE TRAILER ARE AS FOLLOWS: BLACK - HOT; WHITE - GROUND; RED - LH TURN/BRAKE; GREEN - RH TURN/BRAKE; YELLOW - RUNNING LIGHTS; BROWN - INTERIOR DOME LIGHTS. THERE IS NO DEDICATED WIRE THAT APPEARS TO BE LEAD TO THE ELECTRIC TRAILER BRAKE SYSTEM ON THE TRAILER. ANY SUGGESTIONS?
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hosspuller
Reg. Oct 2003
Posted 2017-08-30 9:34 PM (#170460 - in reply to #170459)
Subject: RE: TRAILER BRAKE WIRING QUESTION


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What does the black wire do ? Seems a logical choice for a TRAILER. You might apply 12 volts between it and the ground wire. See if the brakes are energized.
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beeoerdog
Reg. Jan 2014
Posted 2017-08-30 10:29 PM (#170461 - in reply to #170459)
Subject: RE: TRAILER BRAKE WIRING QUESTION


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See the link at the bottom of HTW home page....."Trailer Wiring" Has pictures and everything
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Hawkeye58
Reg. Feb 2014
Posted 2017-08-31 5:02 AM (#170465 - in reply to #170460)
Subject: RE: TRAILER BRAKE WIRING QUESTION


Member


Posts: 11

Location: Pontiac, IL
I'm not sure what you are suggesting. The black wire coming from the trailer connects to the 12 volt power source from the truck. Are you suggesting that I split the black wire and connect it to both the power source pin on the truck connector and to the trailer brake pin on the truck connector? Thanks!
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Hawkeye58
Reg. Feb 2014
Posted 2017-08-31 5:04 AM (#170466 - in reply to #170461)
Subject: RE: TRAILER BRAKE WIRING QUESTION


Member


Posts: 11

Location: Pontiac, IL
Thank you for pointing out this link. I did review it. Unfortunately, it simply shows a blue wire from the trailer which connects to the electric brake system. My trailer does not have a blue wire, nor can I find a wire that seems to connect to the electric brake system on the trailer.
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Hawkeye58
Reg. Feb 2014
Posted 2017-08-31 5:04 AM (#170467 - in reply to #170461)
Subject: RE: TRAILER BRAKE WIRING QUESTION


Member


Posts: 11

Location: Pontiac, IL
Thank you for pointing out this link. I did review it. Unfortunately, it simply shows a blue wire from the trailer which connects to the electric brake system. My trailer does not have a blue wire, nor can I find a wire that seems to connect to the electric brake system on the trailer.
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RTSmith
Reg. Nov 2003
Posted 2017-08-31 8:01 AM (#170469 - in reply to #170459)
Subject: RE: TRAILER BRAKE WIRING QUESTION


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Hawkeye58 - 2017-08-30 9:26 PM I HAVE A 2004 HART BUMPER PULL TRAILER THAT HAD A 6 PIN CONNECTOR PLUG. I DECIDED TO INSTALL A 7 PIN PLUG TO MATCH THE PLUG ON MY 2008 FORD F350. HOWEVER, I CANNOT FIND A DEDICATED WIRE FOR THE ELECTRIC TRAILER BRAKES ON THE TRAILER. THE 6 WIRES FROM THE TRAILER ARE AS FOLLOWS: BLACK - HOT; WHITE - GROUND; RED - LH TURN/BRAKE; GREEN - RH TURN/BRAKE; YELLOW - RUNNING LIGHTS; BROWN - INTERIOR DOME LIGHTS. THERE IS NO DEDICATED WIRE THAT APPEARS TO BE LEAD TO THE ELECTRIC TRAILER BRAKE SYSTEM ON THE TRAILER. ANY SUGGESTIONS?

Not sure where you got these labels, but I believe there's an error. What you call "Hot", will also be the battery charge line, which is also the interior dome light circuit. So- with that you have 2 wires with the same label.

As has been mentioned, would be best to take a battery and ground it to the trailer's frame (with a jumper wire/cable). Then touch each of the other wires to batt + and see what activates. Except for the white wire- which like you I think will be ground. Touch it and you'll get sparks
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HART TRAILER
Reg. Aug 2017
Posted 2017-08-31 9:29 AM (#170471 - in reply to #170459)
Subject: RE: TRAILER BRAKE WIRING QUESTION


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Posts: 1

Hawkeye58

If you give us a call at 405-224-3634, we will be glad to help you with your wiring question.
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PaulChristenson
Reg. Jan 2007
Posted 2017-08-31 6:43 PM (#170474 - in reply to #170471)
Subject: RE: TRAILER BRAKE WIRING QUESTION


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HART TRAILER - 2017-08-31 12:29 PM Hawkeye58 If you give us a call at 405-224-3634, we will be glad to help you with your wiring question.

 
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PaulChristenson
Reg. Jan 2007
Posted 2017-09-01 12:10 AM (#170477 - in reply to #170459)
Subject: RE: TRAILER BRAKE WIRING QUESTION


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200010005001001001002525
Location: Vermont
Hawkeye58 - 2017-08-31 12:26 AM I HAVE A 2004 HART BUMPER PULL TRAILER THAT HAD A 6 PIN CONNECTOR PLUG. I DECIDED TO INSTALL A 7 PIN PLUG TO MATCH THE PLUG ON MY 2008 FORD F350. HOWEVER, I CANNOT FIND A DEDICATED WIRE FOR THE ELECTRIC TRAILER BRAKES ON THE TRAILER. THE 6 WIRES FROM THE TRAILER ARE AS FOLLOWS: BLACK - HOT; WHITE - GROUND; RED - LH TURN/BRAKE; GREEN - RH TURN/BRAKE; YELLOW - RUNNING LIGHTS; BROWN - INTERIOR DOME LIGHTS. THERE IS NO DEDICATED WIRE THAT APPEARS TO BE LEAD TO THE ELECTRIC TRAILER BRAKE SYSTEM ON THE TRAILER. ANY SUGGESTIONS?
If you are not going to call the Hart Trailer people...then track the wire(s) going to and coming out of the breakaway battery unit...because that should tie into your electric brake circuit

Edited by PaulChristenson 2017-09-01 12:11 AM
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Hawkeye58
Reg. Feb 2014
Posted 2017-09-01 4:11 AM (#170478 - in reply to #170477)
Subject: RE: TRAILER BRAKE WIRING QUESTION


Member


Posts: 11

Location: Pontiac, IL
I have solved the problem!! Thanks to all of you for your very helpful suggestions. Mark
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hosspuller
Reg. Oct 2003
Posted 2017-09-01 9:03 AM (#170479 - in reply to #170459)
Subject: RE: TRAILER BRAKE WIRING QUESTION


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Posts: 2953
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Location: North Carolina


For the benefit of other Hart owners searching the internet...

What was the solution ?
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