2. Once the top motor mount was installed all the wires from the throttle body were routed up to and down the backbone of the frame. The wires for the S&S; throttle body system use the same plugs as H-D, so it was just a matter of re-plugging in all the wires to the H-D harness. Then he connected the throttle cables to the throttle body and adjusted the cables. Then, Eric bolted the gas tank back on the bike, and connected the speedo and the dash.