Exterior Lamps - Description
DESCRIPTION
The exterior lighting system for this vehicle includes the following exterior lamp units:
- Cab Clearance Lamps - Vehicles equipped with this option have five individual amber clearance lamp units mounted across the roof panel just rearward of the upper windshield header.
- Center High Mounted Stop Lamp (2) - A standard equipment Center High Mounted Stop Lamp (CHMSL) is centered on the cab roof header panel just above the glass opening at the rear of the cab. On vehicles so equipped, this CHMSL also incorporates two integral cargo lamps, one located at each outboard side of the CHMSL.
- Front Fog Lamps (6) - Vehicles equipped with this option have a fog lamp unit mounted near each outboard end of the front bumper support, behind the lower portion of the front fascia.
- Front Lamp Units (5) - Standard equipment dual headlamps include a front lamp unit with a single, dual-filament headlamp bulb mounted to the front of each front fender panel on either side of the grille opening. Optional quad headlamps replace both of the standard equipment front lamp units with those that each contain two, single-filament headlamp bulbs.
- License Plate Lamps (4) - A standard equipment rear license plate lamp unit is mounted to each outboard vertical surface of the license plate tub formation in the center of the rear bumper on vehicles with a pickup bed. On cab and chassis vehicles the license plate lamp function is integral to the left rear lamp unit.
- Outside Mirror Lamps (1) - Vehicles equipped with the signal mirror option, but not the extended (trailer towing) mirrors have a combined signal and puddle lamp unit integral to the lower forward facing surface of each outside rear view mirror. On vehicles equipped with the signal mirror option and extended (trailer towing) outside rear view mirrors, there are two lamp units in each mirror. One puddle lamp is located in the lower surface of each fixed mirror arm, while one signal lamp located in the upper outboard forward facing corner of each mirror head when the mirror is in the horizontal position. When the mirror head is moved to the vertical position, the signal lamp moves to the lower outboard forward facing corner of each mirror.
- Rear Fender Marker Lamps - Vehicles equipped with a pickup bed and dual rear wheels have four individual rear fender marker lamp units mounted to the rear fenders. An amber lamp is located forward of each rear wheel opening and a red lamp is located rearward of each rear wheel opening.
- Rear Lamp Units (3) - A standard equipment rear lamp unit is mounted to the rear of each quarter panel on either side of the tailgate opening of vehicles with a pickup bed. On cab and chassis vehicles a rear lamp unit is mounted on the outboard side of each frame rail near the rear of the vehicle.
- Tailgate Marker Lamp - Vehicles equipped with a pickup bed and dual rear wheels have a single red tailgate marker lamp unit mounted to the center of the tailgate sill panel below the tailgate and above the rear bumper.
- Underhood Lamp (7) - Vehicles equipped with this option have a single underhood lamp unit with an integral automatic mechanical (non-mercury) switch. The lamp and switch unit is mounted to the underside of the inner hood reinforcement above the right side of the engine compartment.
These exterior lighting lamp units and their controls are combined to provide the following exterior lighting features:
- Automatic Headlamps - Vehicles with the automatic headlamps option are equipped with a unique headlamp switch that includes an A (Automatic) position and have a sun load sensor located on the top of the instrument panel to sense ambient light levels. When the A position of the headlamp switch is selected while the engine is running, the headlamps are turned ON and OFF automatically as ambient light levels dictate.
- Backup Lamps - The backup (or reverse) lamps include a bulb, reflector and lens that are integral to each rear lamp unit.
- Brake Lamps - The brake (or stop) lamps include a bulb, reflector and lens that are integral to each rear lamp unit, and the CHMSL bulb and lens.
- Daytime Running Lamps - Vehicles manufactured for sale in Canada illuminate the high beam headlamp bulb in each front lamp unit at a reduced intensity to serve as the Daytime Running Lamps (DRL).
- Exterior Lamp Fail-Safe Operation - The ElectroMechanical Instrument Cluster (EMIC) (also known as the Cab Compartment Node/CCN) and the Totally Integrated Power Module (TIPM) provide a fail-safe feature which will automatically turn ON the low beam headlamps and all park lamps when the ignition switch is in the ON position and there is no detected input from the headlamp switch, or when there is no communication over the Controller Area Network (CAN) data bus.
- Exterior Lamp Load Shedding - The TIPM provides a battery saver feature which will automatically turn OFF all exterior lamps that remain ON with the ignition switch in the LOCK position after a timed interval of about eight minutes.
- Front Fog Lamps - The optional front fog lamps include the bulb, reflector and lens of each adjustable front fog lamp unit.
- Hazard Warning Lamps - The hazard warning lamps include the bulbs, reflectors and lenses of each lamp in the right and left, front and rear turn signal circuits.
- Headlamp Delay - On vehicles equipped with automatic headlamps, the low or high beam headlamps remain illuminated for 90 seconds after the ignition switch has been turned to the OFF position. If the vehicle is equipped with the optional Electronic Vehicle Information Center (EVIC), the delay interval is customer-programmable for 0, 30, 60 or 90 seconds.
- Headlamps - Standard dual headlamps include a single, dual-filament halogen bulb, an adjustable reflector and a clear lens integral to each front lamp unit. Optional quad headlamps include two single-filament halogen bulbs, an adjustable reflector and a clear lens integral to each front lamp unit.
- Optical Horn - Also known as flash-to-pass, the beam selection function of the multi-function switch control stalk has a momentary intermediate position that allows the headlamp high beams to be flashed momentarily, without changing the headlamp beam selection.
- Park Lamps - The park lamps include the park and side marker bulbs, reflectors and lenses integral to each front and rear lamp unit as well as the bulbs and lenses of the rear license plate lamps.
- Puddle Lamps - Vehicles equipped with the optional outside mirror signal lamps have dedicated clear Light-Emitting Diode (LED) units integral to each mirror that are activated by the door modules based upon door ajar switch inputs to illuminate the area outside below each front door whenever a door is opened.
- Turn Signal Lamps - The turn signal lamps include the turn signal bulbs, reflectors and lenses that are integral to the right and left front and rear lamp units. On vehicles equipped with the optional outside mirror signal lamps there are several dedicated amber LED units integral to each mirror signal lamp unit that are also activated by the turn signal circuits for the same side of the vehicle.
Other components of the exterior lighting system for this vehicle include:
- Backup Lamp Switch - A plunger-type backup lamp switch is installed through the transmission housing of vehicles equipped with a manual transmission and is actuated by the shifter mechanism within the transmission when REVERSE gear is selected. On vehicles with an automatic transmission, a Transmission Range Sensor (TRS) performs the backup lamp switch function.
- Brake Lamp Switch - A plunger-type brake lamp switch is located on the steering column support bracket under the instrument panel and is actuated by the brake pedal arm when the brake pedal is depressed.
- Clockspring - The clockspring includes an integral turn signal cancel cam, which provides automatic turn signal cancellation as the steering wheel is rotated back to its centered position following a vehicle turning maneuver. The clockspring is located near the top of the steering column, directly beneath the steering wheel. Clockspring - Description.
- Hazard Switch - A latching push button-actuated hazard switch is integral to the upper instrument panel switch pod located just below the radio and above the air conditioning and heater controls in the center stack area of the instrument panel.
- Headlamp Switch - A headlamp switch is located on the left side of the instrument panel, below the left instrument panel vent outboard of the steering column. The headlamp switch includes a rotary knob to turn the park lamps and headlamps ON or OFF and, if the vehicle is so equipped, a push button switch for selecting the cargo lamps. The rotary knob is pushed inward for selecting the optional front fog lamps on vehicles so equipped. The headlamp switch also features a horizontal thumbwheel for selecting the panel lamps dimming level, a PARADE mode to illuminate all Vacuum Fluorescent Display (VFD) units at full brightness for visibility when driving in daylight with the exterior lighting turned ON, and for interior lighting control.
- Instrument Cluster - The ElectroMechanical Instrument Cluster (EMIC) is also known as the Cab Compartment Node (CCN) in this vehicle. The EMIC/CCN is located in the instrument panel above the steering column opening, directly in front of the driver. Instrument Cluster - Description.
- Multi-Function Switch - The multi-function switch is located on the steering column, just below the steering wheel. A control stalk that extends from the left side of the switch is used to select the turn signal lamps (right or left) and to select the headlamp beam (low, high or optical horn).
- Park Brake Switch - A park brake switch is located on the park brake pedal mechanism on the cowl side inner panel below the instrument panel, to the left of the steering column.
- Stop Lamp Inhibit Relay - A stop lamp inhibit relay (also known as a brake lamp activation relay or trailer tow damping relay) is located in a connector on the left front fender hydroform load beam within the engine compartment.
- Totally Integrated Power Module - The Totally Integrated Power Module (TIPM) is located in the engine compartment, near the battery. Description and Operation.
- Trailer Tow Wiring - Vehicles with a factory-installed trailer towing package have a trailer tow wire harness with a combination 4-way and heavy duty 7-way trailer tow connector installed in the rear bumper near the trailer hitch receiver. This package also includes an electric trailer brake wiring provision that terminates at a connector located on top of the large body harness connection bracket under the instrument panel to the left of the steering column. An electric trailer brake pigtail harness and an instruction card are available through MOPAR(R) to ease installation of most aftermarket electric trailer brake controllers.
- Upper Instrument Panel Switch Pod - A latching push button-actuated hazard switch is integral to the upper instrument panel switch bank located just below the radio and above the air conditioning and heater controls in the center stack area of the instrument panel. Instrument Cluster Switch Pod - Description
Hard wired circuitry connects the exterior lighting system components to the electrical system of the vehicle. These hard wired circuits are integral to several wire harnesses, which are routed throughout the vehicle and retained by many different methods. These circuits may be connected to each other, to the vehicle electrical system and to the exterior lighting components through the use of a combination of soldered splices, splice block connectors, and many different types of wire harness terminal connectors and insulators. Refer to the appropriate wiring information. The wiring information includes wiring diagrams, proper wire and connector repair procedures, further details on wire harness routing and retention, as well as pin-out and location views for the various wire harness connectors, splices and grounds.