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Old 11-29-2018, 06:49 PM   #6
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intothelabyrinth's Avatar
Join Date: Mar 2012
Location: Bowling Green, KY

One side goes to the test connector (red or pink wire) and the other side goes to 12v... Basically the ecu grounds the test connection when it senses a rich condition, which lights up the light, then un-grounds it when its lean. It should cycle rich for a sec, then lean, back and forth.
1986 245 Auto (RIP)
1986 245 Auto (RIP)
1988 245, M47 (My Daily)
1989 245 Auto California Car
1993 245 Classic (Bro's Daily)
1999 V70 T5 Auto (Girlfriend's Daily)
1988 245 ('93 B230FT project)

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