u/Puzzled-Tear-4135

I only see the 3 pin connector

The 77 has the old loop style plugs and my car has not been converted. I’m not getting power to my glowplugs and the GP light isn’t illuminating on the dash. I want to check the 80amp fuse but I have no idea where it is on the older 123s. The #5 glow plug wire leads to this place on the firewall but I don’t see a fuse there

was putting a new battery into my 300D, and in my rushed state I failed to realize the previous owner had used red wire as the ground and black as the positive and I reversed the polarity. Smoke came out of the alternator, and now the battery light is illuminated when the key is out. Take a look at the video to see what I mean. Will I just need a new alternator? Car still starts and electronics seem to be working

The AC belt on my 300D gets its tension from this pivoting idler pulley. Now that I have the new belt on I’m having trouble getting enough upward force to hold the tension, and can’t get a pry bar to work. Any ideas?