I'm just wondering what wire i should use for ignition wire. And if someone can explain how to send the signal back to the ecu so i wont have cel. Thanks in advance.
Mark

 

hook it up as per the directions. its not that complicated. hook power to the power wire on the ecu, hook ground to the ground wire on the ecu.

red = +12V power
black = ground
white = WB output
grey = NB output

all the info you need is right here: http://www.plxdevices.com/Inst...e.pdf

 

can i use the wires that go to my 4 wire o2 sensor for the white and grey wireS? or do those 4 wires no longer matter. im just lazy and dont want to look up the colors of wb output and nb output

 

the white and grey wires are the output. they go to the ECU. pin D14. unless you are datalogging through your ecu dont put the white wire there. only the grey.

 

Not sure what you mean by datalogging. I am looking to run hondata in future but for now i am just running stock ecu and want it to be reading the o2 sensor so i can get some gas mileage and not have cel thanks for info.

 

the plx is a wideband. if you are getting it just to replace the o2 sensor you really arent gaining anything other then a nice readout to look at. so you are just using it so your ecu has a signal? why not just get a stock sensor and hook it up?

 

didn't have right o2 sensor the 4 wire one to use with obd1 so i bought this instead of buying a 4 wire o2 sensor. Plus im going to have my turbo in 2-3 monthes. Ok i went and looked at my conversion harness from rywire.com and it isn't labeled D10 theres only 3 harnesses just like the obd0. Sorry if i seem slow i just have to rent the bay tomorrow and i dont want to be up there all day. Just want a definite answer where to put the 4 wires. I have the 88-91 civic and the 92-95 civic haynes manuals right here but im still not postive where to hook everything up. I appreciate u tryin to help

 

you arent obd0. your title says you are obd1. if so the correct pin on the ecu is d14. thats the pin for the o2 signal. the 3 harnesses are A, B, D. search around, you should be able to find a pic of something that shows you which one is which. the wire going to d14 is white/red stripe though. shouldnt be hard to find.

for your setup:

red = 12v power on the ecu
black = ground
white = not used since its the wideband out and you obviously have no use for it yet
grey = pin d14

read the plx page that i linked. good information. the 12v, and signal wires need to be made as close to the ecu as possible.

 

Thanks man im pretty sure i got it figured out now. Yea and i figured out about the d14. I'm not sure why it wasn't clicking with me at first but thanks if i need any more help ill ask