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Service trailer brake system
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Question
massbowtie
This is a long post,please bear with me.
Ok so my truck was in the body shop ,they removed the rear bumper and they put the bumper back on after they worked on it . I found the connector for 7 pin trailer plug was not connected for several weeks, meaning it was in the weather(corrosion). I ended up replacing the plug ,replaced with.aftermarket (hopkins). First time connecting the trailer, when i stepped on the brake ( i got a service trailer brake system) warning on. the d.i.c. I didnt look into at it until l iwas back home. I ended up towing with no trailer brakes. I double checked the connections they seemed ok.everything was working but the trailer brake. Not sure what happened i checked all the fuses that had anything to do with tail,park and brake lights and i took them out and did an ohm test and they were all good. There is no power on the trailer brake wire(blue wire). I also found that now the truck brake lights only work when the key is on in the run position. Only other thing I did was wiggled the brake light switch and still no brake lights unless key is on, Did a search and found some people said it was either the brake light switch at the pedal or a sensor that is mounted on the master cylinder. I dont want to just throw parts at it and hate the idea of going to the dealer, just yet that is because . Im thinking its the brake light switch seeing the lights dont work and no power going back to the plug. Any help would greatly apreciated. Im supposed to haul the trailer in another week and would like to have trailer brakes working.
Thanks in advance.
Mike
Billerica Ma.
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