Re: Factory Tach Install
There should be a clip on ground strap from the inst panel to the dash....but it is normally missing.
The inst panel should ground OK without it, however, adding a ground is a good idea.
However, i don't think that's your problem. Normally, if there is a ground problem, the fuel guage will act stupid, esp when you turn on the headlights or a turn signal.
The ammeter is probably the fuses like mentioned. With the key on, engine off, turn on your headlights with the hight beams on, the needle should make obviouse movement to the left. If it doesn't move at all, then move on to the fuses.
Your tach is acting like it is wired wrong internally, or on your connections. One terminal is 12 volt input, the other is for the tach wire. It grounds through the frame of the inst panel. if you were to take that wire from the tach terminal on the dist, and ground it when the engine is running, the engine would shut off instantly. It sounds to me like that is what's happening here. Double check your 2 connections, the 12 volt in, should be on a keyed source on the fuse box. The ignition switch unfused is where you'd want to go with the power lead.
|