Lambda relay pinout?
 

I’m looking to wire up my wideband O2, and thought rather than running a new wire from the fuse panel, I might be able to use the now-abandoned lambda wiring for a switched wire. (My fueling was backdated to a C3.0 system)

Anyone have guidance on what each wire on that relay does? No luck via search.

Thanks
Mike

Anyone??

What year wire diagram are you looking for ? I can find that with a bit of help about it.


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looking at an 83, red wire at 30 is battery and red and white at 86 should be switched current and 85 is brown/ground. Lambda relay under the passenger seat.

Just a regular dpst relay setup then,ok! I thought somehow it acted as the controller for the frequency valve, so I wanted to be careful about using a + from something that may not always have it

Thanks!

It serves the Lambda controller along with the fuel pump relay. The Lambda controller serves the frequency valve. If you are not running late CIS, then there is nothing to disturb. Assuming your gauge will be in the dash, probably less routing to go to the fuse box or ignition switch with an inline fuse.