Community Forums

dgidych · 01-21-2022, 12:41 PM

Have 2006 Diplomat 40 PAQ, the 7 pole trailer wiring female plug doesn't have a wire connected to the Blue (brake ) terminal , anyone had any success in running a 12 ga. wire from an elec. brake controller at the dash to rear of coach ?

klcdenver · 01-21-2022, 08:17 PM

You might want to try a Curt 51180 wireless. I have one only used it once and it worked great. Amazon and E Trailer sale them.

YC1 · 01-26-2022, 11:21 AM

I suspect there may be one already nearby. Possible folded back and covered.

After chasing mine down I use it as a signal wire to tell me the Toad brakes are being applied.

Take a look at this diagram. I know we have an Endeavor but it is a twin to the Diplomat.

photopilot · 01-26-2022, 12:14 PM

There should be a wire to the dash. Took me a while to find it.

Walt

dgidych · 01-27-2022, 08:32 AM

Thanks too all that replied. I have looked behind the the dash and under the side consul. I unwrapped the molded trailer plug harness to were it is joined to the harness that comes down the curb side from the front of the coach and found the harness is only a 6 wire harness. I have done some research and found that Monaco prewired some 2006 models with a brake wire, but never made it a permanent feature until 2007. My question is, has anyone had success in fishing a wire from the dash back to the trailer plug ?

jacwjames · 01-27-2022, 08:42 AM

I had previously looked for a spare wire and gave up but last month I was installing new floors and had to completely pull up the drivers side console and low and behold, I found a wiring harness I think was for a brake controller since it had a heavy gauge blue wire. The harness was underneath the mass of other wires and hadn't seen it before.

Last year I needed to pull a small wiring harness from the secondary fuel filter to the dash for a pressure gauge. I decided to push a 3/4" piece of conduit from the front to the rear between the chassis rail above the ceiling in my basement.

I used 2 pieces of the gray conduit, found enough of an opening in one of the metal supports that all the rest of the wires, hose, and pipe was run through and was able to push the first piece back and then glued the next piece on. I had to drop the ceiling in my center bay and help the conduit through and then I was able reach up in the small bay where my transfer switch and inverter are, grab the conduit and pull then push it back through the rear of the chassis rails until it daylighted just above the axle.

I then used a fish tape to pull the wiring harness through.

Glad I did this because later I needed another wire for the Bluesea MLR-AC switch I installed. This time I pulled a 5 wire harness through, used one wire and have 4 spares.

YC1 · 01-27-2022, 10:24 AM

It can be a head bumping arm cramping challenge to run a wire from front to back and as Jim stated, a piece of electrical conduit to get past the storage bays is a solution. Getting new wires down the tunnels between the frames has been futile for me.

vito.a · 01-27-2022, 10:38 AM

Our 2007 coach had the trailer brake pre-wire but it took weeks to find it. Our 2004 did not have the pre-wire so I ran a new wire.
Monaco uses a tunnel down the center of the coach to run wires and hoses. The front access to the tunnel is behind the front axle in the center of the coach. Ours had some expanding foam on it. The rear tunnel access is just in front of the rear axle.
I used an electricians tape and pulled the wire a couple of compartments at a time until I reached the rear. I had to remove the basement ceiling cover on a couple of compartments to find my plumbers tape when it was hung up. This is usually a 2-person job unless you are an experienced electrician.

I used 12 gauge aircraft multi-strand wire as the original was 14. Some folks use 10 gauge.
I used a Tekonsha Prodigy brake controller on both coaches and it works well.

Post #19 has more detail:
https://www.irv2.com/forums/f115/tra...-366077-2.html