Hey guys been a while since last post but have had a time with the 1977 Mercury 150 I have, well I have removed the 150 and I am picking up a 1982 Mercury 115 Thurs, well I know the boat side harness plugs up differently. 77' side mount and the 82 goes straight in and plugs under cowling, My question is can I splice the wiring to retain my controls or is the best route to use he controls with the 115 ? I currently have the tilt and trim on the throttle and the controls with the 115 does not have t/t function, My boat already has the t/t switches on the dash, just not used as their on the throttle . Guess I'm trying to wrap my head around the T/T is basically a stand alone system ? Right? Or is their wiring from control box to T/T ? Thanks