200TQ dash light problem

[Michael Skowvron <michaels@pittsburgh.sgi.com>]

I have been experiencing intermittent lighting problems in the
instrument cluster of my 200TQW for quite a while now.  Occasionally,
the two lamps nearest to the middle which light the trip computer and
the edges of the tach and speedometer will go dim and at the same time 
the two turn signal lights and the high beam indicator light dimly.
It looks like a grounding problem since it can be fixed by driving
over a bump or giving the top of the dashboard a smack.  I have been
living with the problem.

Last week, the ignition swith broke, so the whole dash assembly had to 
be removed.  I took the instrument cluster and bagan to disassemble it 
to look for the problem.  I may have found the problem, but I'm not
sure, so I'm looking for some help.

When I measure the resistance from one of the dash lamp connections to 
one of the turn signal connections, I get 16ohms.  If I flex the
circuit board a little bit, the resistance drops to 4ohms.  I traced
the intermittent connection to two pins that stick up through the
board at the upper right above the speedometer.  This is very near to
a 28pin black connector.

These two pins are capped with a small green insulator that looks like 
a jumper.  The two pins pass through the curcuit board to another
circuit board that is part of the speedometer.

I don't know if these pins are supposed to be making contact with the
back circuit board or not.  The back circuit board moves freely and is 
not making a good connection to the pins.  But there are sloppy solder 
joints on the bottom of the board which make it look like they are
supposed to be connected!  By wiggling the pins, I can make and break
the connection.  For additional information, if these two pins were to 
be connected to the back circuit board, they would trace their paths
to pins 10 and 11 on the black 28pin connector that is above the fuel
guage.  

Here's where I'm confused.  I can't understand how this was assembled
in the first place.  The solder joints are on the side of the board
thats "inside" the sandwitch.  The white plastic piece that covers the
whole circuit board also covers the solder joints.  The pins pass
through the white plastic and then through the back circuit board, but 
there is no way to get at them and re-solder them!  If they were
soldered at one time, then the back circuit board would not separate
from the white plastic piece because of the solder connection.

What do I do?

Michael