87 trans switches (3)

[dodgy71]

5 sp 4x4:
-4wd hi
-4wd low
-Reverse
I cannot remember how they are wired, seems there's 4 wires feeding 3 switches? Guidance most appreciated!

[FMS88]

5 sp 4x4:
-4wd hi
-4wd low
-Reverse
I cannot remember how they are wired, seems there's 4 wires feeding 3 switches? Guidance most appreciated!

The two 4wd switches are wired in series. One has two male ends, the other male and female. Connect the two switches via the female and male ends, then the remaining male end of each switch connects to the female harness leads. The backup switch has both male ends. Connect them to the longer run of the harness. This is the wiring for my ‘88. I think it’s the same for earlier years.

[dodgy71]

The two 4wd switches are wired in series. One has two male ends, the other male and female. Connect the two switches via the female and male ends, then the remaining male end of each switch connects to the female harness leads. The backup switch has both male ends. Connect them to the longer run of the harness. This is the wiring for my ‘88. I think it’s the same for earlier years.

Makes sense now, thank you!! Of the 4 wires coming from the source, only 1 has power. I'm thinking there should be 2 live, yes?

[FMS88]

Makes sense now, thank you!! Of the 4 wires coming from the source, only 1 has power. I'm thinking there should be 2 live, yes?

On my '88 only one is energized and it goes to the back-up light switch. The wires to/from the 4wd switches serve as the ground for the indicator lights, so neither should be energized. If you connect them (by-passing the switches) the 4wd light should illuminate.

[dodgy71]

On my '88 only one is energized and it goes to the back-up light switch. The wires to/from the 4wd switches serve as the ground for the indicator lights, so neither should be energized. If you connect them (by-passing the switches) the 4wd light should illuminate.

Got em figured out, thank you!