Did reconvert back to R12 and it made a huge difference. Almost back to original cooling specs, and am happy. But not completely. I still have the problem of the aux fan never kicking in when the A/C is running. When I jumper the high pressure switch (I did replace it) the aux fan runs at low speed on my 1-fan 88, and the A/C runs cooler, but I know the jumper is just a band-aid. I would like to wire the fan so that it cycles on and off with the compressor, and leave the temperature switch on the block intact for high speed aux fan running. I know I'll have to tap into the compressor clutch circuit somewhere to trigger a relay when the compressor comes on. The relay will apply a ground through the contacts to run the fan. Is this the best way to go about it? On every other newer vehicle I have the aux fan runs when the A/C runs, including my 190E's. Has anyone done this, and are there any cons by doing this? And if anyone has a wiring diagram that would be great too. Thanks as always for the great help.

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93 190E Sportline (RIP) (45K)
92 190E (Xferred most Sportline parts to this body)
88 300CE (71K)

And the Jeeps:
01 2WD Cherokee XJ (35K, Mama's grocery/kid hauler)
91 4WD Comanche (300HP stroker)