Brake Lights Randomly Go Out
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Brake Lights Randomly Go Out
I was pulling a car trailer (no trailer brakes on it) with my 06 screw. I have a Reese towpower 74378 brake controller. The trailer lights would randomly stop working. I would push the manual slide **** on the brake controller and the brake lights would resume working, but would randomly stop again only to start working once again after pushing the ****. Later in the day I unhooked the trailer, and didn't use the truck to for a few hours. I then went and drove the truck around without the trailer and the truck brake lights would stop working, but (surprise) I would push the **** and they'd start working again. Within thirty minutes it happened again, but I pushed the **** and it started working. It's been a couple weeks now and I haven't had any problems, but I also haven't hooked a trailer up to it since then.
I'd really like to know what's going on because the next time I pull my trailer, I may not have a friend driving behind alerting me to the issue like this recent time. Anyone know what's up?
I'd really like to know what's going on because the next time I pull my trailer, I may not have a friend driving behind alerting me to the issue like this recent time. Anyone know what's up?
Hotshot
Joined: Jan 2010
Posts: 10,060
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From: Bristol, TN.
Since you know you have a problem with the truck brakes, I would start with that circuit and leave the trailer brake controller disconnected until I resolved it. I'm thinking you have a bad switch at the brake pedal and power backfeeding to that point from the brake controller is temporarily drying out moisture in the switch, but that is just a shot in the dark at this point.
Steve
Steve
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Thanks for the tip. I'll look into this weekend.
I'm thinking it may be the brake switch. I've read that a bad brake switch can also cause issues with the cruise control. My cruise control randomly doesn't work, and has been like that for a few years. Hoping to kill two birds with one stone here.
I'm thinking it may be the brake switch. I've read that a bad brake switch can also cause issues with the cruise control. My cruise control randomly doesn't work, and has been like that for a few years. Hoping to kill two birds with one stone here.
Postmaster
Joined: Jul 2015
Posts: 4,392
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From: very South Texas
Thanks for the tip. I'll look into this weekend.
I'm thinking it may be the brake switch. I've read that a bad brake switch can also cause issues with the cruise control. My cruise control randomly doesn't work, and has been like that for a few years. Hoping to kill two birds with one stone here.
I'm thinking it may be the brake switch. I've read that a bad brake switch can also cause issues with the cruise control. My cruise control randomly doesn't work, and has been like that for a few years. Hoping to kill two birds with one stone here.
replace brake light switch.
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Brake lights dont work. Using trailer brake controller button to signal to drivers when I'm braking.
Resendiz
Pre-Power Stroke Diesel (7.3L IDI & 6.9L)
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Sep 22, 2016 10:45 PM
