does anyone know how to install a air/fuel ration gauge on a 99 accord ex automatic 2 door i4?

 

read the instructions that came with it

 

unfortunately, ebay sucks..and does not come with instructions from the seller.

 

their all basically the same what I would do is go to a namebrand websdite and try to print out a copy of their instructions...ut IMOP wibeband FTW!

 

you tap into one of the oxygen sensors wires.. i *think* its the green wire, the positive for it.

 

see if your o2 sensor has 3 or 4 wires. if it has 4 the gray and black are wires for the heater circuits. the other two wires one is a ground and the other is a signal wire. try each one, whichever one makes your o2 gauge dance around is the right one