how to hook up eglos

I got some eglows for my 93ls and have read the teg tips on installation. For people who have already installed these, where is the BEST place to splice in the pos and neg wires from the eglow dimmer switch? Where did y’all decide on mounting the dimmer switch?

i just stuck the ground on the metal reinforcenment of the panels. And the positive i stuck into the fuse of my instrument gauge fuse.

And the Indiglo dials i just hung on the corner of my Steering wheel hub part.