Mercury 8.1S Horizon, Product Applications Manual

Page: 136 / 163

Instrumentation and Controls
90-863758060 AUGUST 2006 Page 9A-3
Accessory Connections
!
CAUTION
If Quicksilver wiring harness is used and a fused accessory panel is to be installed
(40-amp current draw maximum), be sure to connect it as shown in the wiring diagrams.
Do not connect accessory panel at any other location as wires in wiring harness may not
be of sufficient size to handle current load.
!
CAUTION
Avoid fire hazard. The accessory wire on the 14-pin engine wiring harness cannot exceed
15 amp current draw. An optional kit must be used for accessory power or switched
power.
IMPORTANT: The accessory wire in the 14-pin harness will not support amperage in
excess of 15-amps. For protection, the main power relay fuse may blow if an excess of
15-amps is applied. Refer to the Mercury Precision Parts Accessories Guide for an optional
accessory power relay kit that will accommodate higher amperage draw.
A fused accessory panel with up to a 40-amp current draw can be connected to the helm
harness. On dual station applications, the combined current draw for both stations must
not exceed 40 amps. If optional accessory power relay kits are installed, the combined
current draw for both stations must not exceed 40 amps per kit. Each helm harness may
support up to two accessory power relay kits. The boat manufacturer is responsible for
ensuring that the accessory connections are made in accordance with the industry
standards and regulations. See information under
Industry Standards and
Regulations .
Dual Station Instrumentation
Instrumentation and harnesses are available through Mercury Precision Parts and
Accessories to accommodate dual station (helm) applications (see wiring diagram for
typical installation). When oil pressure and water temperature gauges are used at both
stations, dual station oil pressure and temperature senders must be installed on the engine
to obtain the proper gauge readings. Refer to the
Mercury Precision Parts and
Accessories Guide for part numbers.
a
15528
a - Typical coolant temperature sender