AC Compressor 750il

[Beamer619]

I want to fix the AC for my bmw 750il, the AC compressor is bad. The only New AC compressor's I can find are made by Denso and only have one 1 wire to the 3 pin connector. My Old Denso compressor has 3 wires to the 3 pin connector. Is there anyway to make the new AC compressor work since I cannot find any new RPM Sensors?

[shogun]

to use a normal compressor, you have to by-pass the lock sensor, copied from the E31 forum: DIY-How-to-modify-AC-Lock-Sensor-for-single-wire-compressors
https://www.bimmerforums.com/forum/s...re-compressors
http://www.bimmerforums.com/forum/sh...gnal-Schematic
https://www.bimmerforums.com/forum/s...sor&p=30578565
It depends on the built year, check your ETM, E32Fan once wrote:
Details are on pg 6450-22 & 23 at http://www.e38.org/e32/e32_88_etm.pdf

I would open the A26 Lock Sensor Control Unit and solder a jumper wire across the Normally Open relay contacts. This will short X80 pin 3 to X77 pin 1 (shorting SW/RT/GE to SW/GR).

If there are no pulses from the reed relay in the compressor (because the new compressor has no reed relay) then A26 will de-energize its relay, but we won't care because the contacts are now shorted.

This will allow the compressor to run whenever K19 is energized and the pressure switches B7 and B8 are closed (just as in 735iL)

In later years, A26 was modified. The connector became X9968 which is not documented in the connector Views 8500. See 6450-22 at http://www.e38.org/e32/e32_92_etm.pdf

I do not see any outputs from A26 that will bother EML, so I would not expect any problems from shorting the A26 relay. The SW/GR wire to EML is just the compressor run signal to inform EML that there is a compressor load.
If you remove the module cover and plug it into the sockets, you can trace the BLK/RED/YEL and BLK/GRY wires and see that they lead to the relay contacts.
https://imgbb.com/Z6y5GtD

Layne sells Sanden compressor conversion brackets, maybe he also has something for your E32 750 ? https://www.bimmerforums.com/forum/s...ckets-for-sale
lock sensor control module location http://bmwe32.masscom.net/johan/ihka/ihka.html

Or send you original AC compressor to a pro repair shop