MAINTENANCE AND LUBRICA TION

Note: For circuit breaker designations, refer the Circuit Protection charts.

Fuses are standard equipment for all circuits except the headlamps and windshield wipers. Circuit breakers are available optional equipment.

Caution

For oper installation electrical accessories, all wiring should meet SAE r equir ements and r outed thr ough the cir cuit otection panel with oper amperage fuses T ype cir cuit eakers. (Headlights and wipers will T ype cycling - type cir cuit eakers.)

Some vehicles may equipped with daytime running lights. For the daytime running lights operational, a DRL module must installed the relay socket marked either DRL MOD Running Lamps the electrical equipment panel. NOT install a standard relay into the daytime running light relay socket (marked either DRL MOD Running Lamps) a short circuit the headlight high beam circuit will result.

The headlight circuits are protected SAE T ype I (automatic reset - cycling) circuit breakers that automatically interrupt then restore the flow current through the circuit the event overload. This cycling will continue until the cause the overload repaired.

SAE T ype (automatic non - cycling) circuit breakers (if equipped) provide a complete circuit disconnect until the overload The power the fected circuit breaker must shut f before the circuit breaker will reset

The circuit protection panel also provides access battery , ignition and ground terminals for non - factory installed electronic equipment. (On V - MAC chassis, there are two serial link terminals for easy local connection a trip recording device.)

Electrical Grease

T o prevent corrosion the lamp socket terminals, particularly with the clearance and marker lamp, apply a coating electrical sealing grease, such Lubriplate - TEK519, the socket and terminal assemblies.

Caution

not use electrical ease any V - MAC https://www.truck-manuals.net/