I recently purchased a 1996 Nissan pickup at a steal. One small issue, the odo, speedometer and tachometer do not work. It was a little risky because I don't know the mileage. It runs great and the price was right so I took the chance. The temp and gas guages work fine, any reason why the others aren't? In case it matters this is a manual transmission, runs great though clutch throw out bearing makes some noise. Working to fix that too though. Thanks!