Electric brake control for semi

The controllers I used several years ago. I think a wire for 12volt system power, 1 wire connected to the truck brake light circuit.
3rd wire fed the axle brakes.

 

Problem you will have is the 7 way round plug used on your truck will not have provisions for trailer brake power. You will need to run that wire from the brake controller out to wherever your trailer plug is located.

 

I tried to upload a schematic but the file is too large.

Your going to be looking for Connector J019 labelled stop lamp - Wire number YEL2415 at the stop lamp switch. Should be located behind the B panel near the MV3 valve. If not there check under the column behind the pedals.

This circuit should work for your controller signal wire.

A simpler idea is to just install your own switch. I simple normally open air stop light switch spliced in to any air applied signal. Add a spare fused circuit and your good to go. No hacking into the truck wiring.

The later would be my option.

Good luck

 

Email sent

 

Razz
In short you need to google a "Jackalopee" . I use 1 on my T 2000 to go from dot 12v.t to RV 12 vt without intrusion into your tractor wiring !!
cost, about $130.00. Unplug round pin DOT plug, plug in RV plug from your "Jackalopee to Dot tractor plug. Working tractor is now an RV puller, eazzy peezy! The Jackalopee does the conversion w a couple other bennafits
I am an "X" working driver that now pulls my 40' 5th. whl. RV with a Kenworth T 2000. The GVWR is 20,000 LBS. We belong to the "Escapees" RV groupe, the 3rd. largest rv groupe in north America. At this time we have over 400 big rigs, big RV trailer pulled with class 8 trucks.
It does'nt take much to turn a blvd. sled into a holiday hauler, keep the fun Rolling!
Lots more class 8 truck ideas on the Escappees Heavy Duty truck forum. 1 thumb nail shows over 360 photos of "class 8 haulers"

In The Faith
roadfitter