e to i swap, harness questions

[mbonanni]

Bump, I have a 1987 harness from a 325i. Please read first post to help me!

[dougie30]

i thought it was all supposed to plug right in if it was from a 87?

[mbonanni]

Me too.

The 87i harness has two more little plugs on the ecu end than my e harness.

I don't get it.

[jlevie]

The 87 harness, like later harnesses have an input for A/C idle speed increase and the speed signal from the differential. Those can be ignored.

[mbonanni]

Awesome man

Thank you!

Now any tips on how to get the rubber grommet for the harness in the wall?

[jlevie]

Use liquid soap on the grommet. Start the grommet on the lower right side and use a screwdriver to work the remainder in.

[mbonanni]

I need to use a bigger screwdriver. I put the screwdriver through the grommet twice. I will get it on eventually haha.

I will then put silicon on it.

[e30trooper]

I have a 1987 325e, I acquired a 1987 325i wiring harness.

I have started to put the harness is an just noticed that there seems to be extra connections in the glove box. I have two single wire connectors. One has a white male plug and the other has a black male plug.

I also have a green box inside my glove box, but this new harness does not have a plgu for it. Does this mean that I get rid of the green box?

can anyone help me?

*I reused an old thread*

The green box is the eta ICV computer. You can toss that POS.
The white plug on the harness is the rpm(tach), Mpg gauge and DME power supply. You need to connect that since you have a 87i harness its should all plug in. it has 3 wires.

Hit me up if you need any help. Very easy swap. Mine been good for over 6 months now :D

[mbonanni]

Okay, got those conncted, but there were two that remain. Someone already said they are of no use, so I am ready to go.