Speedo in 89 200tq not working

[tm2@earthlink.net]

I purchased a 89 200tq with 83k miles on it out of Van Nuys, Ca about 2
months ago.  The Rad Fan motor had fozen up and the wiring harness was
cooked.  I stripped the cable cover back from the Rad. past the ABS unit
underneath and repaired the wiring.  I added a 70amp fuse to the ground
cable of the fan motor.  What a PITA.  Got it going and drove it up to
Seattle with no problems.  The speedo did not work then and when I
replaced the whole wiring harness it still does not work.  Is there any
way to test the speedo in or out of car. I heard that when the you smoke
that harness that alot of the time it takes the speedo out too. I hate
buying another speedo and finding it's not the problem.  I would
appreciate any help I can get.

Thankyou

Pat Korach
Seattle, WA

89 200tq
86 5000SW Turbo 5spd