o2 simulator wiring?

Discussion in 'The Garage' started by 97blackgt, Mar 9, 2007.

  1. 97blackgt

    97blackgt Well-Known Member

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    alright got the new o2 sims today (splice in kind), and i just want to double check on the install...

    its a 4 wire sensor...

    2 grounds (white), which i dont want to touch
    1 signal wire (black?), which i cut, and place the one wire sim into..(just a resistor)
    1 heater wire (color?), dont touch this wire ethier

    so what is the signal wire? and what is the 4th wire color/what does it do?