Mercury Alpha

GASOLINE STERNDRIVE INSTALLATION MANUAL
Page 56 of 137 90-860172011
Instrumentation Connections
We recommend the use of Quicksilver Instrumentation and Wiring Harnesses. On dual sta-
tion applications, oil pressure and water temperature senders (on engine) must be changed.
Refer to Mercury Precision Parts / Quicksilver Accessories Guide for selection.
The 4 basic gauges that must be used with the engine are:
• Tachometer
• Oil Pressure
• Water Temperature
• Voltmeter
IMPORTANT: Connect fused accessory panel (40-amp current draw maximum) must
be connected as shown in the wiring diagrams.
1. Route instrumentation wiring harness back to engine, making sure that harness does
not rub or get pinched. If an extension harness is required, be sure to secure connection
properly.
2. Fasten harnesses to boat at least every 18 in. (460 mm), using appropriate fasteners.
3. Place hose clamp over instrumentation wiring harness.
4. Connect the instrumentation wiring harness to engine harness plug at location shown.
74754
a
Typical
a-Wiring Harness Connector
5. Tighten hose clamp to secure wiring harness to engine harness plug.