I've been long time restoring my '89 360 and now it's time for the air conditioner, which is in terrible shape.
After an AC failure, some guys from a workshop in my hometown did an extermedy awful job. They destroyed all the previous wiring and bypassed all the protection sensors. 'Mechanically', the AC was supposed to be converted to R134. Compressor is a new R134 one but the dryer was not replaced and is still the original one. Obviously, AC went down many times with the previous owner, and Spain is not a great place to run around without AC in your car. Anyway, mechanical stuff is the second step for this repair.
I dismantled all the horrendous new wiring and now I'm tryin to recover the original one. I suppose there's also a fault somewhere that they were not able to troubleshoot. Moreover, the wiring does not colour-match the AC schematics I've found, so.... This is real fun!! (fun means NIGHTMARE).
I have taken appart the whole wiring column which was still tied up somewhere inside the engine hood (those guys did a real professional job) and I have to re-connect all the elements.
Here's some photos of the wire column, the schematic for the column and connector photos.
Any help will be highly appreciated, as I am completely lost for now. I have some logical ideas of where could some connectors belong to, but up to now I have not been able to figure a completely logical diagram.
Wiring Column:
Column Schematic:
The elements, according to the official wiring diagram, are:
- Fuse-Junction box
Compressor relay (I have two, the official diagram only specifies one)
AC Switch button
Evaporator thermal switch
High Pressure switch
Coolant hose thermal switch
Radiator Thermal switch
Compressor clutch
Electric fan
System pressure high/low switch
Throttle valve
Kick down throttle swtich (I'm pretty sure my car has never had it)
Idle compensation valve (Not specified in the diagram; the engine B200E has it)