Hi I have recently aquired an old tach that I want to install on my 57 chevy 6100. When I got the truck It had a big hole between the light knob and the choke knob. It looks factory because of how precise it is cut. See the tach fits in the hole and thats where i would like it.
Now heres the promble i don't know how to wire it. Win I tried to wire I got shocked cry. But I have kind of figued it out. Theres to nuts marked one says B+ witch I assume means postive on batter. The second has an S+ witch means starter right? But I dont know what the other two are for. Please help don't want to get shocked again. Thank for any info