What is this underdash wiring called?

[Enriquez2000]

Ok narrowing stuff down.... have to find the pinout to this. Looks like 1 wire goes to central locking on the accesory c302 so ill start looking there for pinouts

[Enriquez2000]

Green and Blue are commonly Lock and Unlock wiring from the Alarm brain to central locking unit.

Think you are correct... just have to see where they go into the chasis now

[reelizmpro]

Green and Blue are commonly Lock and Unlock wiring from the Alarm brain to central locking unit.

[Enriquez2000]

The colors and gauge of the wires you are holding are not familiar to me and I am certain are not present under the dash of my 1990 325i manual. I recently removed the dash and HVAC unit as part of a major renovation project and I would have seen such wires if they were present.
Presumably, these are after market wiring such as an alarm or radio. Do they go to pin V, W, X, Y or Z of the accessory connector (C302)?

They dont go to any pins.. they go into the chasis kick panel. They looked fairly big to be stock... ill tracke em down... maybe someones speaker job

[ghrays]

Ok hopefully just this last one

These 2 wires seem to be cut(viper alarm maybe) but go into the body

If you know what they are that would be awesome. Im digging through the etm looking for the colors right now

The colors and gauge of the wires you are holding are not familiar to me and I am certain are not present under the dash of my 1990 325i manual. I recently removed the dash and HVAC unit as part of a major renovation project and I would have seen such wires if they were present.
Presumably, these are after market wiring such as an alarm or radio. Do they go to pin V, W, X, Y or Z of the accessory connector (C302)?

[Enriquez2000]

Ok hopefully just this last one

These 2 wires seem to be cut(viper alarm maybe) but go into the body

If you know what they are that would be awesome. Im digging through the etm looking for the colors right now

[Enriquez2000]

ABS computer is under the dash on the driver's side.

betting thats it... ill see about removing it if its not tied into anything else!

Appreciate all the help. Im determined to get this thing going after the last person gave up. Still have some systems to figure out but wiring looks nasty inside. Even had a viper car alarm I had to de-viper

[reelizmpro]

ABS computer is under the dash on the driver's side.

[Enriquez2000]

The Motronic 1.3 ECU fits in a bracket above the roof of the glovebox. The cruise control module sits above that, high up in the passenger side of the dash.

There are a couple of connectors next to the steering column: one on the left side for the ignition switch, and on the passenger side, one that connects the HVAC harness to the chassis harness.

Ill grab a pic when I get home.. it didnt look like it belonged where they have it...

Keep in mind i received the car already gutted so no dash at all right now

[ghrays]

One more odd question... did the e30 m20 motor ecu originally sit under the dash? It looks like whoever had this before me put the m50 harness in but there is another ecu plug by the steering wheel.

The Motronic 1.3 ECU fits in a bracket above the roof of the glovebox. The cruise control module sits above that, high up in the passenger side of the dash.

There are a couple of connectors next to the steering column: one on the left side for the ignition switch, and on the passenger side, one that connects the HVAC harness to the chassis harness.

[Enriquez2000]

One more odd question... did the e30 m20 motor ecu originally sit under the dash? It looks like whoever had this before me put the m50 harness in but there is another ecu plug by the steering wheel.

[Enriquez2000]

The square one on the right is C302, the accessory connector. This provides power and ground to the radio, power antenna, cruise control, power windows and ABS. See page 8500-1 of the ETM.

The rectangular connector on the left (C103) connects the dash harness to the chassis harness.

You are the man.

Since this is a drift car no accessories needed so ill figure out the window wiring and call it good.

[ghrays]

The square one on the right is C302, the accessory connector. This provides power and ground to the radio, power antenna, cruise control, power windows and ABS. See page 8500-1 of the ETM.

The rectangular connector on the left (C103) connects the dash harness to the chassis harness.

[Enriquez2000]

well at the very least tell us what year your car is and what model...

Sorry.. 1989 e30

[e30davie]

well at the very least tell us what year your car is and what model...