Tryin to wire a tach i just got for my Mach 1. Got held up trying to get through the fire wall. Anytips on best way through? I tried the main grommet near the upper right of steering colum but dont know where it exits and cant seem to punch through it.

 

Found a spot, just up and to the right of that main gromet theres a little solid plug. Its not so solid anymore.