CHECKING YOUR TOW-VEHICLE WIRING
TESTING YOUR ROUND 4 WAY TO 4 WAY FLAT ADAPTER PLUG
A round plug adapter
can be used to connect to a standard 4 way flat plug if your vehicle is equipped with the flat connector. Plug your tow vehicle round adapter plug into your vehicles tail-light socket. Test the light function of each terminal on the 4 way flat end of the adapter plug. There is an Illustration of a 4 way flat adapter plug below. Test the terminals with either a light tester or voltage meter. Identify the LEFT - RIGHT turn/brake signals & TAIL- LIGHT terminals.
Once you have identified the terminals and light functions of your vehicle round adapter plug, compare that information to the below illustrated 4 way flat adapter plug. Your 4 way flat plug terminal functions must match the Tow-Light functions listed to the right of the round adapter plug below. Check the color codes to make sure they match each function.