How To Convert 4-Way to 5-Way Trailer Connector On 1995 Toyota Tacoma

Question:

I was hoping to convert my 4 way to a 5 way trailer plug. I just bought a boat and the trailer coupling blue wire needs to be used. Can I just cut out the old 4 way plug and wire into the the old four way at the highest point on the existing green, brown, white and yellow wires and find a blue wire running from the wiring harness to activate the trailer brake. it seems straight forward, but Ive never done it

asked by: Mark

Expert Reply:

Yes, to install the 5-Flat Vehicle End, part # HM37908, you will need to cut off your existing 4-way adapter. You will splice the wires from your 4-way to the 5-way which will match up color for color. Then, you will connect the Blue Wire to the reverse light circuit on your 1995 Toyota Tacoma.

To connect to the reverse light circuit, you will need to find the wires that feed into the back of the taillights. Then use a circuit tester, like part # PTW2993 to find the wire that has signal when the reverse lights are on.

expert reply by: Reno H