1999 dodge ram 3500 cut factory trailer wiring

Question edited for clarity.
Question moved to model category.

https://www.google.com/search?q=metra+wiring+harness+diagram

and

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This may help. Find it right here on fixya.Com. write for by manufacturer chart. Hope it helps

Use a voltmeter with the key on. Place one lead on the body and go through the pins until u read 12 volts and that will be the hot. Turn on a turn signal and then repeat the steps. You should be able to crack the color code after the process.

Try this site. http://www.etrailer.com/faq-wiring.aspx. They give color codes and detailed info.

Check this link & scroll down to 7 pin RV.

http://www.allpar.com/fix/electrical/trailer-wiring.html

Usually the electronic brake wire is blue and the battery charging wire is either red or black.

Well you are not ALONE .....my 06 3500 does the same thing. no left turn or brake lite on towing. would love to know the solution before taking an AXE to it!!! thank you jesse

is it a 4 pin flat or 7 pin circular?

most times you need to consult your owners manual about this, or a service guide

all you need is a cheap continuity tester, any one to help tap on the brakes..7pin is just like the 4 pin w/extra power wire for acc.lites,electric brakes.when you buy the 7pin rec.,comes w/wiring schematic standard to all trailer rec.- you can do it..kev-mn.