Trailer wiring

[lhall8]

I am having trouble geeting my trailer tail lamps to work. All the blinkers and brake lights work, but for some reason the tail lights will not. However, the odd part is in the vehicles I am hooking up. I have a Yukon and a f-150, but I get power out of two of the three prongs with a testing light using the fourth prong as the ground. However, I can never get the third one to get power when I turn on the headlights. Am I doing something wrong here, or do both my cars have the same bad wiring. Any help would be greatly appreciated becuase I am stumped, or maybe there is an easy solution that I am clueless about.

 

[tommays]

Re: Trailer wiring

http://www.easternmarine.com/em_showroom/tech_info/light_tech.html <br /><br />this is a good tech site but it if i understand you your not getting power at the car<br /><br /><br />

<br /><br /><br />tommays

 

[lhall8]

Re: Trailer wiring

Well, I found I had a blown fuse in both vehicles. It seems fairly odd to have the same fuse blown in two different vehicles which are fairly new.

 

[Wreck Rider]

Re: Trailer wiring

Maybe your trailer lights pushed those fuses over the limit??

 

[CATransplant]

Re: Trailer wiring

Grab your battery charger and check the trailer lights. Hook up the negative to the ground pin, then probe the others with the positive. It could be that you have a short somewhere in your trailer wiring that's blowing that fuse.

 

[milkyway]

Re: Trailer wiring

I have blown my fuses 3 times already. Wasted time a lot of time checking the wirings, and connections. Probably it's water in the lights that's causing short. My tail lights are out again. It was working before launching. Dead when I got home. I must still have some spares...

 

[Silvertip]

Re: Trailer wiring

Are you disconnecting the trailer harness before you back into the water? If not -- you must. Cold water on hot bulbs pops them. The filament shorts the bulb when it pops and out goes the fuse.

 

[skiwake130]

Re: Trailer wiring

I had a similar problem, kept blowing the fuse . I ended up replacing all the wiring. Found a dodgy joint in the chassis rail that was intermittantly shorting . It will be easier and less frustrating to just replace it all .<br /><br />David