i wired the boat with a merc harness and a new sierra ignition switch. the ignigition switch has 6 wires. im also using a sierra kill switch. everything works fine but when i turn the key off to kill motor the motor keeps running. the kill switch will kill it. all gauges working properly ( power up when key is turned to "on" position)
i wired everything straight up color for color. the kill wire (black/yellow) is wired "in"kill switch "out" to seperate ground.
seems the motor isnt geting kill signal to stop when key is turned off?????
is it a problem with how i have the (-)grounds wired???
black (-) ground coming out of key is wired directly to harness (-) ground
any help appreciated

