I swapped out my 231 transfer case for a 242. I installed the bulb in the dash but the indicator for 4 wheel full time doesn't light up. Obviously there is something else I need to do????

did u wire up the 4wd sensor?

I'm not sure. I plugged in the existing wire. 2 wheel part time lights up but full time does not.

Will need to find out if the shift indicator is the same part for 231 and 242.

it's different. 242 uses 3 wires. 231 use two wire

Thanks, this should be a blast to figure out.....LOL. There must be a different Harness.......nice.....