[Urq] RE: Diff. lock switch conversion for '83 Ur Q

[Buchholz, Steven]

... if you want independent control of the center and rear diff lock you
need to run two new lines to operate the second vacuum motor ... otherwise
the center and rear motors are plumbed in parallel.  The plumbing diagram
for this mod is included in the 4kQ Bentley ...

I'm not familiar with the QSW, but my idea is to use a switch mounted on the
instrument cluster to control diff locks to give fingertip control.  I will
plumb a single vacuum supply line to the area under the rear seat or in the
trunk behind the fuel tank cover and use electrically operated vacuum
switches from a 100Q to drive the vacuum motors with short lines from there
to the motors themselves.  I haven't had a chance to test, but I expect that
I'll get a little quicker action on engage/disengage ...

Steve B.
San Jose, Kaleefohnia (USA)

> I just swapped Dash, console, etc.  from an '87 4kq into my 
> '83 Ur Q.   I need to do something with the Diff. lock, 
> mainly because the origiinal is broken.  It may be fixable, 
> but I have some newer diff. switch  and panels.
> 
> I'm looking for suggestiions and diagrams to help implement 
> one from either the later 4000 Quattro, or possibly one from 
> a Quantum Syncro.  Fitment is one issue, and how to hook them 
> up is another.  Of course, as usual I'm trying too use what I 
> have on hand unless there is some compelling reason not to.
> 
> One idea I'm toying with is mounting the one from QSW in the 
> ashtray location of the console.  Since I have an analog 
> guage pod mounted in the connsole, I don't see the 4kq one as 
> the best opption, unless I can take it apart or cut it up so 
> it fits inn an appropriate spot.
> 
> Anyway, I'm curious to see what others have done.  Also how 
> do I convert fromo the 3 line setup in the '83 Urq, to the 
> later which use 6 lines.
>