Operation CHARM: Car repair manuals for everyone.

Notes For Working on Electrical Items

Disconnecting the Battery Cable




1. All switches should be in the "OFF" position.
2. Disconnect the battery ground cable (2).
3. Disconnect the battery positive cable (1).

CAUTION: It is important that the battery ground cable be disconnected first. Disconnecting the battery positive cable first can result in a short circuit.

The harnesses are protected either by tape or corrugated tube, depending on harness location.
The circuit for each system consists of the power source, wire, fuse, relay, switch, load parts and ground, all of which are shown on the circuit diagram.
Each electrical device is classified by system.
For major pans shown on the circuit based on the circuit diagram for each system, a summary, diagnosis of troubles and inspection procedures are detailed.


Connecting the Battery Cable
Follow the disconnecting procedure in the reverse order.

CAUTION: Clean the battery terminal and apply a light coat of grease to prevent terminal corrosion.

Disconnecting the Connector




Some connectors have a tang lock to hold the connectors together during vehicle operation.
Some tang locks are released by pulling them towards you (1).
Other tang locks are released by pressing them forward (2).
Determine which type of tang lock is on the connector being handled.
Firmly grasp both sides (male and female) of the connector.
Release the tang lock and carefully pull the two halves of the connector apart.




Never pull on the wires to separate the connectors. This will result in wire breakage as shown.