GILLIG LOW FLOOR Service Manual Download

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Electrical System

Wiring Harnesses

The wiring in the coach is provided in modular replaceable harnesses. The harness contains several spare

wires for replacements for broken wires or for the operator to add features some time after delivery of

the coaches. If only one or two wires are broken or damaged, the spare wires can be used to replace the

damaged circuits. If the entire harness is damaged, however, it should be replaced.
The harnesses are connected by multi-pin connectors. This feature permits service or replacement with-

out the necessity of disturbing adjacent harnesses. Troubleshooting circuits within the harness is facili-

tated by the use of this type of connector. The pin numbers at each connector for the circuit are shown in

the

Electrical Schematics Manual

Wiring Harness Connectors

The following types of connectors are used in the coach:
Terminal Type Connectors

Terminal type connectors are used at the end of wires extending from harnesses to make connections to

battery and ground connections, or to post type junction blocks, and to connect individual switches, such

as those in the rear run box. Terminal type connectors are attached to the unit with a screw or nut, or the

terminal is pushed into a mating terminal on the unit being supplied with current.
Blade Type Connectors

Single and multiple blade type connectors are attached to the ends of wires extending from the harnesses

and are used for making connections to individual units such as horns, relays, and switches on the dash

panels and electrical control panels.

• To remove a wire and terminal from the connector, insert a thin blade screwdriver into the open

end of the connector and push the tang down to disengage the terminal.

• To install a new wire in the connector, align the lock tang on the terminal with the slot in the con-

nector and push the terminal into the connector until the lock engages the slot. Pull on the end of

the wire enough to be sure the terminal is locked in the connector.

Hinge Lock Type Connectors

Single and multiple contact, plastic hinge lock type connectors are used for making connections to a

mating connector. These connectors are usually located at or near the electrical unit being supplied.
The mating halves of the connector are formed so that they can mate in only one position. When the

connectors are pushed together, the lock tangs on one half engage the mating connector of the other half

to ensure a firm contact.
To separate the connector halves, insert a fine blade screwdriver under the connector locks and pry up

just far enough to disengage the lock hinges while pulling the connector halves apart. Do not pull on the

wires when separating the connector halves or terminals or the wires may be damaged.
Weatherproof, Multiple Contact Type Connectors (Weather-Pak

)

Several multiple contact type connectors are used on the coach.
Cavities within each of the multiple circuit connectors can be identified by the letter imprinted just

GILLIG LOW FLOOR, Service Manual

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