So I decided to hook up my Autometer A/F Ratio guage today and I thought I'd share . I happened to have a spare clock for my 85 SE, so I cut the wires off and removed 1 of the pins and relocated the other 2 to the correct positions for power and ground. So now we have a factory plug on our aftermarket AFM. the remaining lead on the AFM goes directly to the O2 sensor. This lead can be split off in a "Y" with a wire tap and then you can use the connectors from one of the factory amps ( both ends )
I just did this because I like to keep all the wiring looking stock, plus it makes everything a bit more plug n' play.

 

^^^ Air Fuel Guage. sorry