Brothers Trucks Technical Support rocks - Factory Tach Issue

[demian5]

I bought a truck and it had an aftermarket factory tach. It didn't work. I finally got under the dash and saw it wasn't connected to anything. I had no idea what terminal went where. I contacted Brothers Truck parts, cause they have a great youtube video how-to on installing the tach into the dash, but stopped before talking about the electrical. I imagine that is in their printed instructions...

I contacted them and told them my dilemma (and sent pictures of the back of the tach). They helped me with determining what terminal did what. Now I have a working factory tach! It wasn't even their tach to begin with (that i know of).

Thanks again.