Rev it up with gauge attached...uh, an AC is not needed in motor city until next year.

It did the same thing with the engine revved - needle in the gauge kept jumping. Dumped some of the refrigerant into it and everything's fine for now.

You are right - dont need AC till next year - its been ...

I recently noticed my AC was not blowing cold anymore on my '91 244. Belt was also squealing everytime the compressor came on.

I tightened the belt - no change in AC cooling (no more squealing, of course). Went to Advance Auto and got the AC pro heal stuff. I didnt dump any of it into the system ...

She's back! I decided to just get rid of the relay completely. I wired it per Dave Barton's instructions and my lights run great.
The joker who owned this car prior to me wired the lights in such a way that only the outer lights work. The 2 inner tail/running lamps are completely out no matter what ...

So it turned out to be the bulb failure relay...its failed partially. There is no power going to the LHS tail lamp at all.
I am going to try to get a soldering iron and get some jumper wires built to create straight bridge like mentioned on Dave Barton's page.

Might be a few days before I get to it ...

Thank you! This is what I was looking for..

I figured....but before I get to the tail lamps themselves (those have been rather "tastefully reconfigured' by the PO - so half of it is hard wired and the remaining half uses the PCB - I intend to make it all hard wired in the future), how do I check the bulb failure relay (the red cylinder)?

I ...

Follow up:

the blue-yellow wire is the wire to the bulb-out failure light. cutting it effectively disables the bulb out sensor.

pin 1 - blue-yellow - bulb failure warning light
pin 2 - blue - low beam left
pin 3 NC
pin 4 NC
pin 5 - brown-black, to 3rd brake light
pin 6 - grey, from step relay ...

Lost all my brake lights yesterday driving back home. Made sure the bulbs are ok. Took out fuses 15 & 16, cleaned and put them back. No dice...
I have nothing at brake switch - replaced it and now have 12V over there with brake pressed.

However, I get no voltage at the tail lights whether the ...

Amazon, eBay, rockauto, autohaus
Glue them with Permatex 81158.

Appreciate it. That's what I have been using - googling 240 floor pans.
The video is more involved than what I can at this point - that however, is my goal few years down the line.

Should have my car back up sometime next week.