4 wire o2 in a 85.

[5sp. mini]

i,m going to do a t2 swap on my 85 daytona but i,ve got a 4 wire o2 from a newer dodge pacifica. was going to run it.do we think it will work.2 wire to air/fuel meter 1 to heater and 1 to lm. what do you think

[Keito]

I put in a 3 wire 02 when i did a conversion on my 86 GLHT
runs much better.
4 wire is just another ground.

[5sp. mini]

cool.

[GLHNSLHT2]

The white wires are a 12v+ and ground for the heater, Black wire goes to LM and a/f gauge(lame) and grey wire goes to ground. I usually cut 5-6" off on the other side of the plug so you can unplug the O2 if you ever need to change it. Then it looks more factory.

Of course I say since you're swapping things over now is a good time to upgrade on an Innovate LC-1 wideband setup and just leave the 1 wire hanging in the breeze and use the wideband to tell the ECU what is going on (use it's simulated NB output) and then you know your exact a/f ratio since NB's aren't accurate at all.