Tailights only partially work

[TG Twinkie]

If your TV uses the same bulbs for turn signal and brake lights you do not need an adapter. Does the right turn signal work on the TV?
Try turning on the emergency flashers and see what works.

[njloco]

Sorry for not getting back sooner, I work long hours and only just got home. I won't be able to check it until tomorrow. Everything works on the TV, I did find out that I have a whole separate electrical system for the towing, fuses wires etc. on the truck, so I will check the fuses tomorrow and let you know.

I did get to take the rear light housings off and scrape and wire brush the rust and recoat with what I hope to be a better coating. This was yesterday after checking for continuity, I can't believe AS used Mortite to seal the rear back plate for the light housings. I mean it is a good product and that is what I will use to reseal but I would think there must have been something better back in 63. This marks the start of the restoration.

Thanks and I will keep everyone interested informed.

[Splitrock]

An appropriate tester saves a lot of time, answers important questions, and provides an objective way to wire the trailer and the cord. My system utilizes a 7-way tester. In one minute I can see if my tow vehicle is wired correctly and I can see if everything is working.

My tester fits in the trailer cord plug located behind the LP tanks at the front of the trailer. By back powering the 7 pins I can see if my trailer is wired correctly and I can see if everything is working.

[njloco]

Don't doubt that a tester would make life easier, but I don't have one and am new to trailer camping and my new to me 1963 GT, I am sure I will have one in the future.

I worked on the lights until dark, all I can say is everything works except the right rear brake light, checked the TV and all is well. I am now thinking I need one of those two into one adapters, this is the only reason I can come up with that it is not working. I know TG says above that I shouldn't need one but what else could it be. I'll be calling my trailer guy tomorrow and see what he thinks, any other suggestions would be welcomed.

Thanks

Ken

[adwriter73]

Originally Posted by njloco

Don't doubt that a tester would make life easier, but I don't have one and am new to trailer camping and my new to me 1963 GT, I am sure I will have one in the future.

I worked on the lights until dark, all I can say is everything works except the right rear brake light, checked the TV and all is well. I am now thinking I need one of those two into one adapters, this is the only reason I can come up with that it is not working. I know TG says above that I shouldn't need one but what else could it be. I'll be calling my trailer guy tomorrow and see what he thinks, any other suggestions would be welcomed.

Thanks

Ken

What is your tow vehicle?

[njloco]

Hello adwriter73,

My TV is a 2004.5 GMC Sierra, 2500HD. I am going to take the left and right side wires at the plug and reverse them, then if the right rear brake light works and the left doesn't, at least then I will know it isn't the trailer.

My trailer guy seems to think that a previous owner may have installed an adaptor in the body of the trailer and that is why is doesn't work, I'll know more after I do the above mentioned switch.

Thanks

Ken

[njloco]

I wanted to let everyone know that I traced it down to the TV, apparently the previous owner used the right side trailer brake wire for something other than pulling a trailer. The wire going to the plug in the back of the TV is dead, I haven't figured out where it is hooked up as yet, but I know it's not correct.

Thanks for all the help, and thank G-D it's not the trailer.

Ken