1986+ Mercury 6/8/9.9/10/15HP 2-stroke Factory Service Manual, Page 93Get this manual
CHARGING AND STARTING SYSTEM
3The starter button harness is routed down the PORT side of lower engine to cowl4The RED harness lead is connected to the POSITIVE terminal of the rectifierTorque attaching nut to 2.8 Nm (25 lbin5The YELLOWRED harness lead attaches to the #2 terminal of the starter terminalTorque attaching nut to 1.7 Nm (15 lbin
aRED Lead [Torque nut to 2.8 Nm (25 lbin]YELLOWRED Lead [Torque nut to 1.7 Nm (15 lbin]