I'm trying to figure out why the speedometer isnt working on my 1996 Mitsubishi Eclipse, it was working a couple months ago then my grandfather-in-law was trying to mess with something under the hood and then the car just sat at his house for a couple months so now Im trying to sell it and dorve it home last night and realized the speedometer isnt working. The car is a 1996 Mitsubishi Eclipse, 2 wheel drive, GST Manual Turbo. Any ideas what might cause this to happen?