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1983 300cd
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Hello everyone,

I am trying to get the a/c working on my 1980 450sl and am not getting any power to the compressor. I am guessing relay but would appreciate any other ideas. Can someone please give me the relay location and number?
Thanks.
 

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2010 Mercury Milan Hybrid, 1993 BMW 325i convertible
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I am trying to get the a/c working on my 1980 450sl and am not getting any power to the compressor. I am guessing relay but would appreciate any other ideas.
If you take out the glovebox liner you'll see a series of vacuum switches mounted to the firewall. Switch 23 controls the power to the AC compressor. Switch 19 is the main power for all the ACC functions. A vacuum leak will cause unreliable operation of the system.
 
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