I thought I was so smart, tracing and fixing the a/c problem on my 1984 TD. Then I realize my 85 TD has a different system; a Klima system.
Replaced compressor, receiver-dryer and clutch - all were bad. New switches in the receiver -dryer. Mechanic pulled a vacuum and cleaned out the system and recharged with R134.
A/c ran fine for a while now won't come back on. He suggests the Klima relay under the fuse box. $240.
My question: Which socket contacts on the Klima relay can I jumper to engage the compressor clutch as a test?
Does the 85 TD have a climate sensor unit behind the glove box, like the 84, or is all that stuff on the Klima board?
Any other suggestions?

__________________
Stage Wizards Lighting and sound designer
1981 SD 328,000
1985 300TD, 266,000
1984 300 TD, 267,000