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Discussion Starter · #1 ·
ok so the c20let has a 3 wire lambda 2 white(heaters) and 1 black(signal), some cars have 4 wires 2 white(heaters) 1 black(signal) and 1 grey(earth).
the question is if i fit the 4 wire sensor and earth the grey wire or cut it off? will the sensor work ok?
 
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