Parts needed:
Wiper stalk with controls for the trip computer: 4B0 953 503 H
VW electrical repair wires for Wiper Stalk 000 979 133 (2 connectors per wire)
VW electrical repair wires for Instrument Cluster harness 000 979 018 (2 connectors per wire)
About 1m of 18 guage wire used if you need to extend the wires from the stalk to the cluster.
Procedure:
DISCONNECT THE BATTERY - If you don't then you could have air bag warning lights on afterwards as you will be disconnecting the clocks.
It’s not necessary to take the airbag off to just do the wiring only if you are fitting the stalk. The upper and lower covers that go around the control stalks and ignition key can be removed using a Phillips screwdriver. Just twist the steering wheel around as needed to access the 4 screws. There is a 5th screw (Torx) on the bottom near the handle for steering wheel tilt adjustment.
Some Golf's already have the 6 pin connector (connector T6e) in place. Pins T6e/5 and T6e/6 contain wires used to control the intermittent windshield wiper regulator (ref wiring diagram 52/20, tracks 253 & 254). Pins 1 through 4 were empty, and will be used for the MFI control wires.
Disconnect the connector, pop it open, and install the 4 repair wires in slots 3 to 6 of the connector.
6 Pin Connector (T6e) with repair wires in place
The photo below shows connector T6e in place as found it in the car, and connector T32a Green in place behind where the instrument cluster normally goes. The repair wires need to run between these two connectors. T6e uses medium size repair wire connectors, and T32a uses the very smallest size. By using half a length of each repair wire, there should be enough overall length to complete the harness without needing additional wire in the middle.
View with cover off steering column and instrument cluster removed, showing connector T32a
The only really annoying part of the job is removing the existing, blank pins from connector T32a. These pins have a small barb on the left side (left side when viewed with the wires exiting from the top), and you can used the tip of a knife to press the barb to the right, while prying the pin up wards at the same time with a jeweler’s screwdriver. The photos below illustrate the process.
Releasing the barb on the OEM blank pin
The OEM blank pin halfway out (it slides straight up)
What the OEM pin looks like, showing the barb on the left side
Once the OEM blank pins are out, it is pretty easy to put the replacement pins from the stalk into the empty slots. The pin outs go as follows:
T6E (wiper stalk 6 pin plug) T32a (Green multi plug connector on the rear of the clocks)
T6e pin 1 to T32a pin 24 - This is the MFI call up button bottom (display switches up).
T6e pin 2 to T32a pin 23 - This is the MFI call up button top (display switches down).
T6e pin 3 runs to ground
T6e pin 4 to T32a pin 25 - This is the MFI memory reset switch.
The photo below shows connector T32a after the MFI control harness has been installed in it, but before the cover is put back on the connector. You can also see the unusual recessed bolt that holds the steering wheel in place. As mentioned earlier, you don’t need to take the airbag off if you plan to install the wire harness only. The airbag and steering wheel will need to come off when you remove and replace the control stalk.
Wires in place in connector T32a
The photo below is just a close-up of the finished job, again, before the cover was put back on connector T32a.Use a marker pen to put dots on the end of the wires, indicating what pin location on T6e they came from.
Close-up of T32a with cover off connector
When you are putting the wires in place running along the channel from T6e along the existing wire bundle in the steering column, be sure that the wires don’t foul when the steering column is moved up and down, and also in and out. Be especially careful to be sure that the wires are not crushed against a large metal flange near the wire harness when the steering column is moved to the full ‘up’ position.
HTH
Neil