How to Install 7-Way Plug Wiring Correctly on a 1975 Toyota Land Cruiser

Published 10/10/2018

Products Featured in This Question

Cordless Circuit Tester

(15)

$19.26

3-Piece Electrician Tool Set

(11)

$30.14

Roadmaster Brite-Lite 3-to-2 Tail Light Converter for Towed Vehicles

(121)

$58.93

Question:

Jon, thank you for your reply! Apparently, I also need a 5 wire to 4 wire converter - which I have found as the Toyota has separate bulbs/whites for the brake light and turn signal light. Again, thank you!

asked by: DAVID H

Expert Reply:

Thank you for the pictures!

A common misconception is that there is a specific wire color for each specific function. Although there are "typical" wire colors, nothing is set in stone so your best bet is to test for function.

Using a circuit tester like part # PTW2979 or a multimeter like part # PTW1714 test each of your wires on your 1975 Toyota Land Cruiser by running through your lighting functions. Once you know what circuit each wire is connected to, use the picture of the 7-Way connector (vehicle end) that I linked to make the pro[per connections. Be sure that your plug is oriented correctly. If the color wire does not match what your plug says then disregard the plug and go with the picture that I attached.

I think the confusion is from the 7-Way round trailer connector in the picture that you attached. If you check out the picture that I linked of a 7-Way blade trailer connector you can see that the functions will match up with the 7-Way on your Land Cruiser.

If you have any problems please let me know and I can assist you further.

expert reply by: Jon G

click to enlarge

David H.

10/10/2018

Jon G.

10/10/2018

We have exactly what you need to combine your turn/brake signals! The Roadmaster Brite-Lite Wiring Converter # RM-732 was built specifically for your kind of wiring system. Simply connect the brake and turn wiring to one end and then wire the yellow wire for left stop/turn and the green wire for right stop/turn.