Switches on the 84 4k center diff

[Mark J. Besso]

IIRC, the UrQ didn't offer the option of locking the center or rear 
differentials individually.  You pulled one switch and they both locked. 
 The 4KQ & 5KQ allowed that to be done in two steps.  You pulled the switch 
half way out to lock the center, and the rest of the way out to lock the 
rear too.

Vittorio is trying to achieve a setup that allows individual locking of the 
center & rear diffs.

~MB



On Sat, 17 Jan 2009 13:12:44 -0500
  "Louis-Alain Richard" <larichard at plguide.com> wrote:

  I shoulda've know that you are able to distinguish a plug from a
switch...
  
  I took a look to the 1983 urQ spare tranny I have here, and there is no
  other switch on any part of the body. And there shouldn't be any... so it 
is
  probably an aftermarket switch. Do you have access to it ? Maybe this is a
  temperature switch that someone installed to monitor diff temp ? Or maybe 
a
  pickup point for a rally computer ? This would be a nice spot, less 
affected
  by individual wheel speed.
  
  Do you have a picture ? Maybe we can figure what's behind ?
  
  Louis-Alain
  
  
  -----Message d'origine-----
  Thanks!
  
  Yes indeed that is the plug that is used to carry the diff lock cable.
  
  #26 is also identified as the diff lock switch (oriented East to West on
  the center diff).
  
  However there is one more switch that is installed in a North to South
  orientation - towards the top of the center diff, that is not identified
  in any of the 4k - in fact they all look the same from the ETKA point of
  view.
  
  The back-up light switch is further forward - just above the cv shaft
  flange.
  
  Anyone know what this unidentified switch does?
  
  Vittorio -
  
  
  -----Original Message-----
  Hi Vittorio,
  
  This part, item 25 from page 32-00, is not a switch. It is the attachment
  point for the diff lock cable end, a sort of special bolt with a groove
  for a circlip. Just zoom on the part, and you'll see.
  
  Louis-Alain
  
  
  -----Message d'origine-----
  There are 2 switches on the 84 4k tranny center diff - my ETKA tells me
  one is NLA and the other is the diff lock indicator (shown as the upper
  switch)...
  
  Anyone know what the lower switch is?
  
  Vittorio -