MSefi.com read only forum (Jan.15,2018)

alright this is what I have as far as schematics goes:

black- dedicated ground

gray/light blue- EEC to o2 sensor

orange- fuel sensor ground to EEC

gray/yellow- I traced this back to the ignition switch

so using the picture:

http://www.fordfuelinjection.com/images/hego02.gif

I should be ...

ill have to go home and see what exactly each one was described as.

its the mustang 4-wire sensor from my 93 lx n/a.

ill get the details scott

thanks

how should I go about wiring the ford 4-wire heated o2?

i have traced my wires through schematics. the ones that are self explanatory are dedicated ground and eec power but the other two are quite vague.

one is shown to be going to the EGR system and the other goes back into the harness somewhere ...