Boat mate trailer and brakes backing up

[jason1973]

I just got my 2019 mondo, and what i noticed is anytime i am backing up the trailer brakes go on unless i am level going straight. But if i turn the wheel or am on a hill the brakes activate.

I used the key to lock them out but is this normal? i am able to back up level going straight. I have the round connector plugged into my truck, the barrel connector and all fuses are good.

[larry_arizona]

If you are plugged in the solenoid should deactivate when your reverse lights power up.

Sounds like your connector is not working or wired properly.


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[sandm]

do you have a solenoid on your trailer? not all trailers come with an electric reverse lockout.

[jason1973]

I don't know. its a brand new 2019 from boatmate. It has the lockout which i used and inserted the key.

[jph3]

You shouldnt have to use the key... I would start with your truck wiring.

[korey]

My new 2018 was doing this when i brought it home last year. I found a loose ground on the solenoid under the tongue of the trailer. It was one little Phillips head screw with a ring terminal on it.

if that's not it, check for 12v between pin 7 and 2 on your truck when in reverse.

[MJHSupra]

Good pic/attachment

[Mondo Ken]

No too sure what wiring your trailer has on it, but my 2017 Boatmate trailer came with a 6 pin straight connector that plugs in to a 6 straight to 7 round pin adapter then in the 7 pin receiver on my truck.

I turn on my headlights manually (on auto does not work) to disengage the trailer brakes when backing up.

Different.... but it works...

[korey]

My new 2018 was doing this when i brought it home last year. I found a loose ground on the solenoid under the tongue of the trailer. It was one little Phillips head screw with a ring terminal on it.

if that's not it, check for 12v between pin 7 and 2 on your truck when in reverse.

Between pin 7 and ONE. Not 2. I fat fingered that... don't let the pin for "trailer brakes" confuse you. That's for electric brakes like on campers and horse trailers.

[jason1973]

I will check this, thanks for the graphic. My truck is brand new as well and tow many trailers, some with brakes and never has been a problem.