If you're at all handy, you can install your own glow plug bypass using a switch rated for 60+ amps, some 8ga wire and splice/solder the high-amp supply to serve as the relay. The only issue is that you have to pay close attention to the time your glow plugs are on.

I used a tractor pull-starter rated for 80 amps and just spliced then soldered the high-amp lines to the ones going to the relay and the plugs, respectively.

If you have the big aluminum blox type relay, there is a possibility of fixing it. On mine, I had both 220 microFarad 16v capacitors heat up too hot when the relay gap stuck closed once and overheated the unit. The electrolyte in the capacitors melted out and I just soldered in new capacitors only an hour or so ago. I'll be reinstalling the relay on saturday and checking to see if it works properly. (The whole thing failed because the previous owner bypassed the 80amp fuse box and had the high-am glow plug supply wired directly to the relay. Had it been fused, I'd still have a good relay.)

Good luck!

Phil Forrest

__________________
1972 220D "Trudy," named by a friend.

"The 220D sounds good... I suspect it is the only car that you need a calendar for, rather than a stopwatch, when doing acceleration tests."
Tom Abrahamsson