Need to wire tow bar into 1999 LT35

Hi ebrown80
You can splice into each wire in turn at the back of the lamps.No need to cut right through the origional loom completly. For a really good joint you should spot solder each connection and insulate all joints well. Tow bar sockets operate on a common earth, so no need to loop each one.
Check back of socket and you will find each pin has a number. 1---7
The wiring colours from the socket back to the loom are as follows
No 1 Pin--- Yellow Wire---Left Side Flasher
No 2 Pin--- Blue Wire------Fog Lamp.
No 3 Pin--- White Wire--- Earth. Must have good contact or nothing else will operate.
No 4 Pin----Green Wire--- Right Side Flasher.
No 5 Pin----Brown Wire---- Left Side Park Light
No 6 Pin----Red Wire-------Brake Lights
No 7 Pin----Black Wire----Right Side Park Light. Centre Pin.
I hope this helps you out
Best of Luck with it
John

There is already a 4 wire trailer plug installed on the car look under the bumper area and you will see it is flat and has a cover with a tab on it when you pull the rubber tab it shows the 4 connectors or bullet connecters female you can buy a male connector at any auto parts store and they can show you where it is for free, they will also have the color coded kit for you to wire it to protect your wires from a short and grounding out. The Plug and kit cost's $15.00 for the plug and 20 feet of wire to connect to your trailer you are pulling or if your trailer already has a plug you can get an adapter for it.