Mercury Mariner V-250 V-275 Outboard Service Shop Manual 1990, Page 70Get this manual
Pur Ie Jumper ACHOMET ER TRIM INDICA TOR GAUGE ALARM HORN +
Black Jumper Black
Purple Bro wnlWhite
PLUGConnect to Control Box
Tachometer (Without Adjultabte Dial), Trim Indicator Gauge, and Alarm Hom Wiring Diagram
Purple Jumper TACHOME TER
Bla ck Jumper
TRIM INDICATOR GAUGE
ALARM HORN