ian kam

Now when hooking up the o2 sensor wire do you go straight from the DME wire that goes to the A/F gauge or....Disconect the A/F gauge wire from DME connection and hook up to piggy back module? I hope this makes sense ...so ya right now my A/F gauge comes of DME wire. Also the red power supply wire from the MAF sensor to the circular multi pin hook up by the drivers fender under the hood. What color is the wire we need to hook up too....It tells me what pin but what color feeds the pin in question.

Ski

Ian, for the red power wire; the diagnostic port, if you start where pin C is, the one with the FLAT area in front of it, then go clockwise, the first port will give you 12V when you power up the car.

As for the O2 wire, IIRC, John likes to splice it into the signal wire inside the engine compartment, which means splitting the sheathing behind the plug, I think jwl is doing his now,,,John you online?

fast951

For the O2 signal I like to tap into the black signal wire close to the O2 sensor plug in the engine compartment.

ian kam

ok doesnt really answer my question. I have my Gauge already hooked up to the wire in dme harness. I keep the gauge connected to the DME and hook into the wire going to the guage? I know what pin I need but what color wire feeds that pin?

fast951

If you already have your gauge connected. Tap into the wire that is going from DME to gauge. Your AFR gauge works as always, and the PB gets the O2 voltage from the same feed line.

I don't read the forums all of the time. It might be better to email me directly for support questions.

ian kam

ok john I will send you a email do you know what wire feeds the pole i want for 12v power supply?

fast951

Ian, it's fully detailed in the installation manual I sent out. Let's take this off line... Drop me an email...

Ski

Ian, solder your red wire or take the guts of a butt splice, solder that and stick in the same hole as you see on the pic - the large red wire, this will power your wire. If you want to splice it in underneath, that's a whole lot of trouble.

fast951

Thanks Bret...

Swedish Meatball

Old thread revival!

I want to use the diagnostic port to power my MAF; but when I check the disgnostic plugs no one of them reads 12V! the max I get something like 0.5 V from some them - that's all! This is with the key on but with engine off.. does the engine have to be on to power that connection?? That'd be weird..

Any other tips on where to get power in that area of the engine bay?

ross255

Yes engine has to be running, or at least cranking.

I used this for my MAF also, cant remember if its 5 or 12volts though.

Ski

12.1-12.3