TECH : Request for Help about MFA

[treed2@u.washington.edu (T. Reed)]

Patrick,

Here is some information on those wires from my notes of when I did my MFA
install (almost 2 years ago):

mfa switch:
T7a/2 -> G/BK T4a
T7C/1 -> GY/R T4a
T7/3 -> GY/Y T4a
ground -> BR T4a

outside temp sensor:
T7/2 -> BR
T7/4 -> BK

oil temp sensor:
T7b/2 -> G/BK

T4a is the four-wire connector that you're talking about, except I think
the info above is for the other end of the connector (not the switch end)
and the wire colors change between the two.

T7, T7a, T7b and T7c are all connectors on the gauge cluster. I can't
remember how they're paired up but each physical connector has two of
those four, one on each "half" of the connector. Kinda hard to explain.

You will definitely need a bentley to dicipher this information.. and I
can't guarantee that it's correct, since my car is an '87 16v scirocco,
my gauge cluster is an 8v mutant-cluster with 16v 8k tach and 140mph
speedo and the mfa portion is from an '86 8v golf. IIRC, though.. the golf
and scirocco wiring colors were the same.

If your car did not come with MFA, the harness will not be there, you need
to pull it from a junkyard car. So don't plug the 4 wire connector in to
anything without knowing its for the mfa first! The cruise switch uses the
same type of connector, so be careful.

I did reverse-engineer the wires for the cruise switch (and I can give you
a meaning for each wire if you want) but I didn't bother with the mfa
since i had both bentleys at the time and I just wanted to get the mfa
working.

Hope this is helpful somehow (i doubt it!)

-Toby

On Sun, 2 Mar 2003, Patrick Bureau wrote:

> Alright I am trying to install MFA stalk into my non
> MFA 85 rocco, I removed the nonmfa arm and working on
> the wirring.. the question I have...
>
> 1. there are 4 wires  (blue, white red and yellow)
> coming from teh stalk does anyone know what they are
> for?
>
> 2. My car has Cruise (non functional) control, and I
> noticed a similar plug (4 wires, different order)
> under the dash, should I use this connector?
>
> 3. are the plug under dash that connects currently to
> the cruise control, match color per color on the plug
> for the MFA wires?
>
> Then to figure out the MFA->digifiz wire
> connections..lol
>
>
>
> =====
>
>
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