Mercury 35/40HP 2 Cylinder Outboards Service Manual PN 90-42794--1, Page 314Get this manual
Electrical Connections for Models With Power Trim 1Remove cowling from engine
4Make bullet connector wiring connections, between remote control wiring harness and engine wiringIMPORTANT: Tape back and isolate any unused wiring harness leads
AWARNING
Cables passing through cowl must be protected from chafing or being cut, by using the neoprene sheet as described in the following stepsFailure to protect cables as described could result in electrical system failure andor possible injury to occupants of boat2Plug remote control harness connector into engine harness connector, then secure connector in place with retainer as shown