4000 Power Mirror Switch Fix

[Christopher Flanner]

Excuse me if this is well known but it's a new idea to me.

As with many 4000 owners, my power side mirrors didn't work properly.  
On one of my 4000s, the mirrors didn't work at all.  That one turned 
out to be broken wires in the loom at the door hinge.  But even once I 
repaired that, the controls worked intermittently at best.  Here's my 
solution that worked on both of my 4000s.

You're probably ready to hear me say "open the switch and clean it" or 
give you an elaborate plan for rigging a switch or a set of switches to 
take the original's place.  Or, maybe you're not.  Anyway, here it goes.

I noticed that the switch worked fine when I took it out of its place 
in the door handle.  With the handle off of the door and the switch 
connected to its harness, it worked fine.  "How is this condition 
different than before?", I asked myself.  When the switch is in the 
door handle it is squeezed with a fair amount of force by two bent 
spring steel tabs that are designed to keep it in place.  It seems like 
these tabs exert enough force to distort the switch to the point that 
the internals lose contact with each other.  I removed the tabs by 
CAREFULLY taking the bottom cover off of the switch and sliding the 
tabs out.  I then put the cover back on the switch and put the door 
handle back together and shimmed the front of the switch to hold it in 
place.  VIOLA!!!  Now it works.


Chris