While the manual says to disconnect the battery for everything, probably including checking oil, I certainly didn't. Just remove the console, take out the blank, pop in the tach and tighten the nut, plug in the tach and you're all set. I installed mine in about 5 minutes in the parking lot of Baxter Cycle last Spring with an Allen wrench and a pair of pliers borrowed from the parts guy.
We all like to think of ourselves as rugged individualists. But when push comes to shove most of us are sheep who do what we are told. Worst of all, a lot of us become unpaid agents of whoever is controlling the agenda by enforcing the current dogma on the few rugged individualists who actually exist.
