i bought mechanical autometer oil pressure gauge, can't install it .......
i tried to sell it, no one buys mine
then i buy AIR/FUEL ratio gauge ........ i hope someone can help me install this ****

and i also have a problem w/ my JOE P MBC, the boost is always high, but i already figured out why ..... i hope so

help me on the air/fuel ratio gauge installation (electrical)
mechanical gauges are piece of **** (except the boost gauge)

 

i don't need to do anything beside that?

 

the a/f gauge has 3 wires red, black,and purple. red goes to ignition switch or acc power. black goes to ground, purple goes too the rear oxygen signal wire on your ECU. the rear oxygen signal wire is pin b17 (white wire). this is on the B harness (B135), on ecu pin out digram from manual. let me know how it goes, if you need more help pm me back. If you need a pin out diagram of the ECU, do a web search on google and it should bring up sites where you can download it for free. Thats what I did. If you doubt your wire tapping abilities, dont attempt to mess with the ECU wiring, I suck with car electronics so I had a mobile audio professional do the wire tapping. My gauge works awesome. BTW, Im assuming your gauge is Autometer...if not I dont know about the colors of the three wires. The ECU wire is tha same though. Hope I helped.

Ryan