Electrical problem
1986 Nissan Truck 6 cyl Two Wheel Drive Automatic 243000 miles
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the tach and speedometer are not working what can I check.

Hi lawsontac,

If both had stopped working at the same time, then you need to check for a blown fuse or loose wire connection at meter. Guess speedometer is not cable driven?

If one went off after the other, then you need to check speed sensor for speedometer and coil or wire for tacho.