4WD indicator light switch?

[cpj]

Ok, I have an 89 YJ, and the 4WD light on the dash is not coming on when I shift into 4WD. I checked the bulb, and it is fine. The question is where is the switch that controls the light? And yes, it is going into 4WD.

[jfair]

I believe but I have been wrong before,the switch is located on your front axle and should hook into your vacuum acctuater that ingages the 4 wheel

[cpj]

I looked there, but only saw the vacum lines going to it. Maybe I missed something, but I dont think I saw it there. I have a feeling it is inside the T case. And if it is, I have feelling it will just stay not working, depending on how hard it is to get to.

[OldYJ]

who needs a light anyway Chris?

[TanYJ]

The switch is tied into the vacuum actuater, let me check my service manual, and scan the pages that apply to it.  This may take a few minutes....



Notice the 2 check valves, 1 is just before the switch box that actuates the dash light.  And, there is a breather valve that could be blocked too.  Good luck.

[cpj]

who needs a light anyway Chris?

Cause if'n Im gonna be a rough rider one day, I gots ta know if Im in 4WD. :biggrin:

Thanks for the help Dick, Im anxious to see where it is.

[cpj]

Thanks Dick. :cool:  I just wonder where it is mounted. Ill check it out in the daylight.

[TanYJ]

It should be mounted up on the firewall, passenger side, but just follow the vacuum lines, you can't miss the switch.

[cpj]

Gotcha. Ill go have a look.

[cpj]

Found it! Thanks again for the help.

The light not working is only part of the reason that I wanted to find it. I knew that the 4wd system works off of vacum, and I just wanted to learn more about how it works, and make sure I dont have any leaks or messed up hoses. That, and light bulbs that dont work piss me off.