1991 AC problem.

dm575

Regular user
Compressor not kicking in. Pressure is showing midway in the green on my STP cheapo top up kit. If I jumper the cycling switch the compressor kicks in and blows cold. Its looking like the switch unless anyone has any other ideas. Will anywhere stock these in the UK or is it a Rock Auto/ebay from the US.

Sys was converted from R12 to R134A a few years back.
Cheers.
 
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