Trailer Wiring

[Jtmoney714]

My motorhome has separate brake and turn signal lights. My trailer has the combo lights. I know I need a 3 to 2 converter. I’m wondering what I do for wiring. Do the motorhome brake lights have a wire going to the trailer plug already? Or do I need to splice into those. I would think my motorhome would have provisions for brake lights in the plug already so do I have a different style of plug on the trailer and motorhome? Help….

 

[wesinls]

Send pictures of what your Motorhomes hitch and plug look like, what you're describing doesn't make sense...not to me at least. 

 

[Jtmoney714]

Send pictures of what your Motorhomes hitch and plug look like, what you're describing doesn't make sense...not to me at least. 

I think I typed slower than my actual thoughts. My trailer brake lights don’t work when connected to the motorhome. The reason is that I have a separate brake and tail lights on the motorhome. And the trailer uses the turn signals as the brake lights. What I’m trying to figure out is where to grab the brake wire signal from. I’m wondering if the motorhome connector already has a brake light wire running to it. I’m sure others have had to remedy this issue. 

 

[Chingon619]

If you're saying what I think you're saying, it's going to be a doozie. I'm having a similar problem with a relatives Nissan Armada where the running lamp and brake lamp are separate signals when on a trailer, the turn signal overrides the brake lamp and causes the flashing. While running lamps stay lit. The issue is the turn signal being the same as the brake, but on the Moho or Nissan Armada it's not. Most of the vehicles setup that way, need a relay for towing harness usually from factory.

For example: I installed a tow package on the wife's Honda Pilot. The wiring harness came with 2 relays I had to put in the hood in their respective place for the wiring to work out back. I was a bit thrown by this but didn't put much thought into it. I bet it had to do with that similar issue. 

Get us a pic of the plug and the back of the moho, at least what model to figure out what it has for lighting.

My truck GMC sierra, or Workhorse chassis moho don't have this type of issue I believe because they already use the brake signal for turn signal flash. Pretty simple and goes to a trailer plug no problem most likely. Sorry, I'm just helping you brain storm here. 

On the Armada, the great guys at Uhaul that installed their hitch on it, did some Jerry riggin' underneath to get some kind of lights, well no running lights on the trailer. Pissed me off to say the least. They tried to use some sort of Chinese converter and even though I wired it correctly it still doesn't work. I'm left with factory tow harness from Nissan just to get it all to work with their relays as well. 

 

[wesinls]

Use a volt meter or a test light and have someone tap on the brakes or hold it with a bungie cord...do the same with the signals to figure how the motor home is wired and then just match it up with the trailers wiring...most are a standard configuration,  Google to see what is standard  and hopefully you only need yo change one (motor home or trailer wiring)

 

[azyxzer]

This might work for you:

[COLOR=rgba(0,0,0,.85)]This tail light converter combines your vehicle's independent brake light and turn signal to make them functional with your trailer's lights. Converter works with either incandescent or LED tail lights. 4-Way connector sold separately.[/COLOR]

https://www.etrailer.com/Trailer-Wiring/Hopkins/HM48847.html?feed=npn&utm_source=google&utm_medium=cpc&utm_campaign=Google | Shop - Trailer Wiring&adgroupid=128484934262&campaignid=15586143335&creative=569877447301&device=c&devicemodel=&feeditemid=&keyword=&loc_interest_ms=&loc_physical_ms=9030209&matchtype=&network=g&placement=&position=&gclid=Cj0KCQjwpImTBhCmARIsAKr58cxPN-FeZaMyF_s56VJTuAXhTXUDk1ysNDkrQdOauaJrVIMKNIbs3f8aAraxEALw_wcB

 

[Willinetics]

My motorhome has separate brake and turn signal lights. My trailer has the combo lights. I know I need a 3 to 2 converter. I’m wondering what I do for wiring. Do the motorhome brake lights have a wire going to the trailer plug already? Or do I need to splice into those. I would think my motorhome would have provisions for brake lights in the plug already so do I have a different style of plug on the trailer and motorhome? Help….

I had to do this on my Moho. The moho had a 6 pin connection at the rear wired from factory with rear running lights, turn signals, brake lights, reverse lights, and ground. I wired on a 7 pin plug and used the conversion box for the turn signal feeds. I am using a Curt Echo bluetooth brake controller but some Moho are prewired for a brake controller under the dash and the plug is there to wire on tbe brake controller if you go that route.