Wiring diagram I nedd the wiring diagram for the trailer hitch. it has a 7 pin factory plug.

https://www.narva.com.au/resources/trailer-plug-wiring-diagram

https://www.narva.com.au/resources/trailer-plug-wiring-diagram

make a 5 pin plug ---- trailer wire ---- 7 pin socket
converter cable
5 socket 7 pin round plug
Pin 2 to pin 1 left turn wire yellow
pin 3 to pin 3 Earth return to body of car
pin 5 to pin 4 right turn wire green
pin 6 to pin 6 brakes light red wire
pin 7 to pin 7 Tail light Brown wire

if it is a rectangular 7 pin then
5 socket 7 pin rectangular plug
Pin 2 to pin 1 left turn wire yellow
pin 3 to pin 3 Earth return to body of car
pin 5 to pin 4 right turn wire green
pin 6 to pin 6 brakes light red wire
pin 7 to pin 7 Tail light Brown wire
refer to narva wiring diagrams to check
could use a 12v dc probe to sus out what the pins do.
might be able to buy a converter cable from a car spare parts shop maybe or make it yourself

Depends on plug type and number of Pins used.
Is it 5 pin or a 7 pin round plug or a rectangle plug ?

http://www.narva.com.au/products/browse/wiring-diagrams

When you buy a new plug the wiring diagram will be on the paper with the plug.

some van don t have a ground wire. hook up to trailer put jumper cables to frame of trailer and van if works install a ground wire plug

I am guessing you mean the 7 pin trailer tow adapter.

the 7 pin RV plug itself



The 2005 trailer tow adapter wire diagrams

With 4 prong and 3 extra, that will give you what you need for 7 prong for towing RV. If your not too experienced in that area, a mechanic at any trailer place, or hitch installation place or who knows RV wiring, should be able to do it for you in about 1/2 hr. or less. Testing the wires from your truck for what they do as in right , left, stop, running/taillights, etc is about the hardest part, and the 7 prong usually comes with what terminal does what.

try http://www.etrailer.com/faq-wiring.aspx. It should help and guide you to your answers.

u must install the fuses for the system in he underhood heavy duty fuse box, it will be marked trailer tow

I believe you can look up the manufacturer of the trailer plug kit and find the wiring diagram there. On alot of the trailer plug kits, they have pics and diagrams in the package. The 7 pin plug (truck side) is available with the pig tail set up that plugs directly into the wiring harness for the lights. Then all you would have to worry about is the 2 wires for the electric brakes.

Hi jonas,

Click here for a diagrams showing color codes and wire placement in a half dozen vehicle types.

Click here for diagrams on standard trailer plugs.

The second link is excellent.

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Mike