Honda BF35A-BF45A Outboard Motors Shop Manual., Page 299Get this manual
121 BATTERY GROUND TERMINAL Install the battery ground terminal to the starter motor as shown [3] MAIN WIRE HARNESS GROUND TERMINAL
Install the ground terminal to the engine as shown
[I] STARTER MAGNETIC SWITCH GROUND TERMINAL
the engine as shown
Install the battery positive cable and power trimhilt relay wire (power trimhilt type only), and starter motor cable as shown171-2 [TI-1 STARTER BATTERY MOTOR POSITIVE CABLE CABLE POWER TRIMTILT POWER SUPPLY WIRE (Power trimhilt type only)