secondary o2 sensor wire
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secondary o2 sensor wire
Anyone know which wire is the signal into the ecu from that sensor on a 99 ls? I am new to tegs but I can't find anything really helpful in that area on the web like I could for my Z cars what's the deal..... 
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Joined: Oct 2003
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What are you trying to do? I think its the white wire with a red stripe. It should be on the outer connector(biggest one). Sorry I dont know the connectors names or whatever. Thats where it was on mine to hook up my A/F ratio gauge.