89LSED

I was looking at the wireing in my wagon, which has a hasport built wireing harness. And i noticed on the multipoint conversion subharness which has a 6 Pin Plug, and all of the wires are run to the ECU. But only 5 of the wires are tied into the ECU.

The last wire is a Green wire.
Anybody know what that wire could be? I wasnt able to trace in in the harnes becuase i dont want to cut up my Pretty Hasport harness.

Thanks

crx_si-r

post up some pics. look at the harness and see what matches its color. there should be a small amount of exposed wire just before the plugs.

89LSED

This is the 6 pin plug that Hasport added to the harness when they built it.
It is the 6 New wires that are running to the ECU.

When doing the mp swap, how many new wires do you run to the ECU?
5? or 6?

crx_si-r

Based on it's position I want to say it's for your back up switch

crx_si-r

I'll double check my diagram when I get home.

89LSED

Back up switch? As in the 2 wires coming off the tranny?
i dont see a reason why that would be going twards the ECU
but your the wiring guru!

Oh, this car was origionally an auto. so i dont have my revearse lights hooked up.

black0hatch

what motor are you running? you only run four wires to the ecu. two for the extra two injectors and two for the dizzy.

crx_si-r

i think the issue is mainly because its an obd0 GSR that you are running. an obd0 (PR3 and PW0) were not meant to run a gsr. the obd0 ecu's do not recognize the IAB sensor. you may want to get a skunk2 manifold for it then it might run better seeing as its a similar manifold to a b16.

on a stock mpfi harness the 6-pin connector has the following wires going into it:
1. back up switch (yellow wire)
2. distributor (thick white wire)
3. coolant sensor at cyl head (red/white)
4. back up switch (ground green)
5. fan switch (yellow/green)
6. IAT (red/yellow)

crx_si-r

see if your plugs have the same colors as this then you can go from there.

89LSED

Awesome bro! Thanks. Yes I am running the wrong Obd system. And that will changevas soon as I get money. I have the obd1 dizzy and p72. I Just need jumper harnesses and 4 wire o2