Odd 7 to 4 wiring problem
I've recently installed a brake controller on my RV as I'd planned to tow a trailer. I have confirmed it's working with a 7 pin LED tester. Now I'm flat towing a car and I just want marker/brake l...
Forum Discussion
gijoecam wrote:RinconVTR wrote:gijoecam wrote:
Maybe I'm mis-reading something... But the 7-pin connector is showing a left turn, a right turn, and BOTH when the brake is applied, right? There is (or should be) no separate BRAKE signal on a standard 7-pin adapter, and if there is, somebody has it wired wrong.
Did you word that wrong accidently? 4 pin brake lights are a combination of left/right at the same time. You said that, but its a little confusing. 7 pin to 4 pin have this wired within so the brake lights work, but the brake signal is not present.
http://www.etrailer.com/faq-wiring.aspx
I wouldn't say 'wrong' necessarily, but maybe 'poorly'...
I should have written, "There should be no separate BRAKE LIGHT signal in a standard 7-pin connector."
Yes, there is a BRAKE feed from the controller, but it does not power the brake lights on the trailer. What I wasn't understanding is the way the tester works. The BRAKE signal it indicates is for the feed to the trailer's brakes, not the brake lights on the trailer. Hitting the brakes on the tow vehicle should illuminate the left and right signal feeds at the 7-pin simultaneously.
Exactly!
