You might be in luck, sort of. Looks like the seat back motor & the headrest motor might be accessible by removing the panelling on the back of the seat which you should be able to do in situ. Don't know how similar the 126 seat is to my 124, but mine looked like somebody had kludzed in a replacement motor with the seat still installed. There was some very sloppy uninsulated soldering done to the wiring right near that motor. With the seat out it would've been about as easy to replace the motor with its harness.
joe On 8/9/05, JJJ <[EMAIL PROTECTED]> wrote: > argggh! '86 300sdl > > so far, the switch seems good > > i've removed the frame bolts in order to remove the seat...it's too heavy > and so i took the bolts out of the rails, except one...there are 4 corner > bolts on top, then there is a sneaker underneath in the middle of the > rail-you take it out from below...that rail's loose,but...how to get to the > one that must be on the other side??