Originally Posted by babymog

You can not install it without removing the wheel, fortunately removing the wheel is a simple job. The hardest part is getting the allen-head bolt to break free, I always use an allen bit in a ratchet, with a box-end wrench over the allen bit so that you can use the ratchet in one hand, the box-end wrench in the other hand, like a Tee-handle. Not keeping the bit straight in the bolt-head can damage it enough that removal will become impossible.

Don't be afraid to apply lots of force, I believe that the steering lock in the 124 is a beefy one that was designed to deter theft well, I've removed at least a dozen wheels this way and it works well.

Anyway, the switch is plugged in under the dash, you'll need to remove the lower dash panel (above the cruise-control amp). Then you can test the new switch by plugging it in, before going through the whole wheel-pulling exercise to install it.

Please however, check the fuses first. Not just visually, but with a test light to ensure that there is actually power on the top of the fuseholder. Corrosion and bad connections plague this fuse system.

The fog-lamps are supposed to stay on with the high beams.