Battery Isolator (For Tow Vehicle); Exterior Lights - Jayco COVE 2002 Owner's Manual

In normal conditions a converter will not overcharge a battery unless:
The battery has low or dead cell(s), or
The converter has a malfunction. The charging module on some converters have a positive
shut-off and on others there is a reduced charge rate to a very low amperage.
A fully charged battery will read 12.7-volt DC and 1.265 specific gravity at 80°F (32°C). A battery is
considered discharged at 11.8-volt DC by electronic standards. When the voltage drops below these
levels, permanent damage will occur.
The interior lights will operate from the converter and/or auxiliary battery. Some lights will have
wall switches and others will have switches in the fixtures themselves.
The park trailer battery is installed in parallel circuitry with the battery on your tow vehicle. Both
batteries supply power to your trailer, so it is important not to discharge the tow vehicle battery
below the level of power required to start the engine. To prevent this occurrence while parked, you
should disconnect the wiring harness between the park trailer and tow vehicle or install a battery
isolator (see below). When the engine is operating with the park trailer connected, the vehicle's
charging system will charge both the vehicle battery and the auxiliary battery.

Battery Isolator (For Tow Vehicle)

A battery isolator should be installed for two purposes. First it receives current from the alternator
and controls distribution of energy to both batteries. Secondly, it serves as a check valve to prevent
energy from being drawn from tow vehicle chassis battery. Energy in the tow vehicle is now
preserved to start your engine.
Two types of isolators are available, mechanical and solid state. Each type has an amperage rating
(70-amp per side) to indicate it's capacity of operation. The solid state type of isolator, although
typically more expensive, will provide the best overall performance. Your dealer can assist you with
purchase and installation.

Exterior Lights

All exterior lights are energized by the tow vehicle power, such as tail lights, clearance lights, turn
signals, brake lights, etc. When attaching wire leads to a tow vehicle, carefully and tightly tape all
connections for moisture protection.
Refer to diagram (Fig. 4-28) for the color code of the seven wire harness and connector. The
connector between the tow vehicle and your park trailer may build up corrosion with extended use,
and should be cleaned periodically to insure good electrical contact.
White 1 Ground
Blue 2 Brakes
Green 3 Running Lights
Black 4 Interior 12-volt Lighting
Red 5 Stop & Left Turn
Brown 6 Stop & Right Turn
Yellow 7 Back Up
The Systems
7 yellow
Fig. 4-28
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