Lotus AC switch wiring

K-Series Programmable ECU installation questions / support issues
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Wo2m
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Lotus AC switch wiring

Post by Wo2m » Thu Dec 28, 2017 11:31 pm

2005 Federal Elise
S/n 44700

Can someone help me understand where to obtain this signal for ac switch? (what goes to ecu pin "B9") literally the last bit of wiring i have left. would greatly appreciate it.

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Hondata
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Re: Lotus AC switch wiring

Post by Hondata » Fri Dec 29, 2017 8:51 am

<t>With the Lotus the AC output is controlled by the multi function relay box. You either can use that output (sorry, I do not know which one) or change the AC button from momentary to a off/on switch and use that output wired via the pressure switch to ECU pin B9.</t>
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Wo2m
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Joined: Thu Dec 28, 2017 11:25 pm
Location: Santa Clara, CA

Re: Lotus AC switch wiring

Post by Wo2m » Fri Dec 29, 2017 10:45 am

Rgr, so the b9 is an input (12v?) So the ecu knows the compressor is on?

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Re: Lotus AC switch wiring

Post by Hondata » Sat Dec 30, 2017 2:56 pm

B9 is an input that tells the ECU to switch on the AC compressor.
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