Wiring from Wideband to MS3ProPNP
 

Hey Everyone,
I'm sorry of a thread like this already exists and if it does I would be happy for you to point me in that direction.

I am about to start installing a MS3ProPNP into my 2000 NB along with a wideband controller (AEM 03-0310). I think I have the general idea of what I'm doing excpet for one thing. Does the output of the wideband controller get put into the existing connector for the output of the OEM o2 sensor or does it need to be spliced into the megasquirt itself? Like does the PNP harness include the wire from the stock o2 sensor?

If anyone can help or needs clarification on my issue please don't hesitate to reply. I am new to tuning so help would be appreciated. :)

Blue wire on stock connector for signal

And that goes straight into the harness?

Should go to the ECU, yes.

Perfect thank you for your help :)

Does your MS3 have the option connector? If so, use the CANH, CANHL wires from the AEM attached to the wires you add into your option connector. That allows you to use the digital signal instead of analog (no chance of ground offset). I just added an 120 Ohm resistor near the inline controller to terminate the "network". Next Spring I'll be swapping it in place of the 30-0300 controller gauge. I didn't realize AEM built a gaugeless controller so I installing the gauge on a glovebox mount that I modified so it can fold up/down. Turns out it's not that bright but I didn't want a flashing gauge attracting attention from boy racers and possible theives. My modified MSM already sticks out more than I like!

Yeah I feel the same way about the gauges, I bought the perfect tuning universal one so i can just have all my data in one gauge. If I use the options CAN bus is there a different configuration in TunerStudio to get MS to use the can as the AFR reading? And my universal gauge uses the CAN bud as well so i don’t know how many can inputs and outputs there are.

Details were found here but I recently deleted all my links as mine's been working for more than a month and I put it into winter storage this week. Search MS3 AEM CAN or canbus, maybe include options connector/port. It's only two wires and works for most without terminating the canbus at the controller end with a 120 Ohm resistor (easy to install). Read the MS3 instructions and AEM instruction and simply connect the high/low wires. Setting the software is a little more complex but that's also detailed here with pictures.