I am putting my old/new DUI in to my 60. I had my dad pull it out of my 40 thats in storage virginia and send it to me here in KC. He dont remember where the switched power wire went or the tach. There is only one place for each one but i want to make sure i have it right before i put power to the wrong one. And I have searched and tried to contact Davis and havn't heard back yet.