Did that..... been there. I "always" do a search. I couldn't find anything positive therefore, I asked my friends here on the forum and they pulled through within minutes. I love real world users........ RayFor the future you can just google/internet search just about anything including the 4, 5, 6, 7 wire plug wiring male and female, also all trouble codes what they mean and possible solutions.
No waiting for responses, what we refer to DIY searching for solutions on the internet.
You're ridiculous...... PERIOD! What's snappy about me? You're the one that wants to be argumentative over nothing. I saw all the diagrams "before" my O.P. I've never read ANY of your posts but, I bet you could have found answers good/bad by googling as well. I trust the people on this forum and look for true real world answers from them simply due to owning these trucks. I asked for a wiring diagram on a 2018 GMC, I didn't come across anything that was definitive to my 2018........ So I asked..... BIG DEAL. If I had the truck on hand, I would have simply checked out the harness adapter on the truck with my meter. I was simply looking for a quick positive answer in order to make up an extension due to being pressed for time.A little snappy for a person looking for help
7 pin trailer wiring found this in less than 20 seconds, obvious you didn’t try very hard.
Real world users always searches before jumping on forums.
I wasn't sure about that..... As the old saying goes "You learn something everyday" Thank you! :smile2:No need to search for vehicle and year specific. Trailer wiring is standard across the industry. The only time you'd find otherwise is if someone wired a trailer their own way
You're absolutely right..... you never know about proper color codes being used. I've come across it too many times. I.M.O., the best way is to confirm proper connections is by using a 6v - 12v circuit tester. In my case, I was simply looking for a quick/positive answer without my truck at hand. Thanks again for your help. Ray :smile2:I’ve seen various trailer manufacturers use different/their own color coding, but the position of the lighting function doesn’t change. That can mess with you if you’re not careful...
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Exactly..... I knew if I asked in this forum I would get a correct answer. This forum rocks........:brianI just went to this thread, got as far as the picture,and printed it. Then scrolled down, and saw the search. Almost got worried, then seen round,spade several types wired differently. I’m 70 and have a box of different connectors, so I see where the original poster could be confused. I am new to the diesel world but not to power/electrical systems. Being old I have learned.
Great point! RayYou have to remember when your looking at the plug the wire location is the opposite when looking at the plug and the wire location on the back side.
The center has always been for reverse/backup lights on a 7 wire plug.
I have to think about it every time I'm connecting wires, the trailer male plug terminals is the opposite location of the female vehicles plug.
If you had a 7 wire plug that the center was for charging then someone changed the location, that's not the standard.
7 wire plugs are blades that's all I've ever seen, with the center (backup lights) is round, the 6 wire plugs are round and the center is black for 12 volt.