Author Topic: Brake light wiring for flat towing  (Read 2234 times)

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Wheezer

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Brake light wiring for flat towing
« on: April 30, 2010, 04:32:07 PM »
Alright, all you geniuses out there help me out with this.  I know that many of you flat tow your Jeeps either behind an RV or other tow vehicle.  I too will be towing my '95 YJ behind my motor home soon.  What I need is simplified schematics for wiring my Jeep's tail light to accept signals from the motor home, so I don't have to string additional lights when towing.  I know some of you have done this, so help a Jeeper out.

Thanks!

Wheezer

Offline oldjeep

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Re: Brake light wiring for flat towing
« Reply #1 on: April 30, 2010, 06:16:38 PM »
Alright, all you geniuses out there help me out with this.  I know that many of you flat tow your Jeeps either behind an RV or other tow vehicle.  I too will be towing my '95 YJ behind my motor home soon.  What I need is simplified schematics for wiring my Jeep's tail light to accept signals from the motor home, so I don't have to string additional lights when towing.  I know some of you have done this, so help a Jeeper out.

Thanks!

Wheezer

Simplest way is to just unplug the plug in the passenger wheelwell and run your trailer harness back to that plug.  If you send me your email I can send you an XPS doc with the 2 pages in the FSM that show the tail lights
« Last Edit: April 30, 2010, 06:20:07 PM by oldjeep »
Chuck P
The clowns'? Oh, yeah, the clowns. We fight them too — entire armies, spilling out of Volkswagons. We do our best to fight them off, but they keep sending 'em in!
94 YJ - gone
98 ZJ - sons truck
97 TJ - daughters project

www.oldjeep.com

Offline aka-justin

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Re: Brake light wiring for flat towing
« Reply #2 on: May 01, 2010, 09:38:24 AM »
I ran a trailer flatwire from the front to the rear light.  Brown connects to the running lights.  White goes to ground.  You need a diode to hook up the turn/stop light for yellow and green.  I picked mine up from my local RV repair/parts place for around $20-30.  So my running lights all light up and my rear tail lights stop and blink.  I ran the wire along frame zip tieing them to the fuel lines to keep it from getting caught on anything.

After driving over the cable once, I replaced the 4 wire connector with 6 wire port on the front and made a jumper wire that connect to the 6 wire port to 4 wire port.

Here's some easy to wire kits that include wire diagrams (I should have bought one of these ;) ):
http://www.etrailer.com/p-RM-150.html
http://www.etrailer.com/p-RM-154.html

My diodes I used looked like the ones in the kit.


Here's the jumper wire that goes from my jeep to my rv:


« Last Edit: May 01, 2010, 09:42:10 AM by 1995yj »
[1995 YJ 2.5L with 4" lift on 31" KM2 - Sold] 1995yj
[2003 TJ Rubicon 4.0L with 4" lift on 35" Wrangler M/T - Sold]
To be continued...
--Justin

Offline aka-justin

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Re: Brake light wiring for flat towing
« Reply #3 on: May 01, 2010, 09:52:43 AM »
By the way, I've always noticed that my lights look pretty dim when connected during tow.  I'm sure it's because I ran over the wire which stretched the copper before snapping it causing resistance.  I plan on picking up some 4" round LED lights and converting my tail lights to LED so it's brighter while in tow.  You have to also add clear lights for reverse and a license plate light if you do this.  They sale kit replacements, but I'm notoriously cheap and go the cheapest routes when possible.

only $5.87
http://www.harborfreight.com/4-inch-submersible-led-stop-turn-trailer-tail-light-with-flange-mount-94795.html

$169 for a kit
http://www.quadratec.com/products/12403_0085.htm
Just an FYI.
« Last Edit: May 01, 2010, 09:54:02 AM by 1995yj »
[1995 YJ 2.5L with 4" lift on 31" KM2 - Sold] 1995yj
[2003 TJ Rubicon 4.0L with 4" lift on 35" Wrangler M/T - Sold]
To be continued...
--Justin

Wheezer

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Re: Brake light wiring for flat towing
« Reply #4 on: May 06, 2010, 06:02:42 PM »
THAT'S IT!  I knew you guys would come through.  Thanks

Wheezer