Lamps/Lighting - Interior

The interior lighting for this model includes the following standard and optional incandescent interior lamps and controls:
- Ash Receiver/Cigar Lighter Lamp - An available ash receiver/cigar lighter lamp is secured by an integral mount to the outside of the cigar lighter halo ring. A single lamp serves to illuminate both the translucent halo ring and the ash receiver.
- Cargo/Dome Lamp - Several cargo/dome lamp units located overhead in both the front and rear of the vehicle interior are standard equipment. These lamps feature a single incandescent bulb. An optional version of these lamps includes an integral three-position switch that protrudes through the lamp lens.
- Cargo Lamp Switch - Toggle-type remote cargo lamp switches located in the accessory switch bezel in the center of the instrument panel, on the back side of the cargo compartment bulkhead panel, and on the rear cargo door pillar are an available option on all van models. The instrument panel switch has two Light-Emitting Diode (LED) units, one for illumination and a second that provides an indication. The switches mounted in the cargo compartment also have two LED units, but only the indication LED unit is functional in this application.
- Dome/Reading Lamp - An optional equipment dome/reading lamp unit is located in the windshield header area between the driver and passenger sun visors. This lamp features two incandescent bulbs, one dome lamp bulb and a second, dedicated reading lamp bulb. An integral four-position switch protrudes through the lamp lens.
- Dome Lamp/Intrusion Sensor - An optional equipment dome lamp/intrusion sensor unit is located overhead in the vehicle interior. This lamp features four incandescent bulbs, two for dome lamps and two for dedicated right and left reading lamps. This lamp has two integral three-position switches, one to control interior lamp operation and one to control reading lamp operation. This lamp also houses three intrusion sensors that are part of an optional vehicle theft security system.
- Door Jamb Switch - A door jamb switch for each front door is standard equipment on all models. A door jamb switch for each sliding side door and the right rear door is standard equipment on wagon models. The sliding and rear door jamb switches are not available for van models.
- Entry/Exit Lamp - An entry/exit lamp to illuminate each front and sliding side door step well is optional equipment on wagon models.
- Time Delay Relay - Vehicles equipped with the optional remote cargo lamp switches also have a time delay relay located in the electrical center within the driver side front seat riser.

Hard wired circuitry connects the interior 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 interior lighting system 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.

The interior lighting systems can be divided into two general classifications based upon the circuit that controls their operation: The interior lighting circuit, or the exterior lighting circuit. The hard wired circuits and components of the interior lighting systems may be diagnosed and tested using conventional diagnostic tools and procedures.

INTERIOR LIGHTING CIRCUIT
Depending upon the vehicle model (van or wagon) and the selected vehicle options the interior lighting circuit may include dome/cargo lamps located overhead in the front and rear of the vehicle, a dome/ reading lamp located in the header area above the windshield between the sun visors, and entry/exit lamps located in the front and sliding side door step wells.

WAGON MODELS
In all wagon models, the lamps in the interior lighting circuit are provided with battery current at all times by a fuse in the fuse block beneath the steering column. The front, side, and rear door jamb switches control a ground path for each of these lamps, except for the optional reading lamp. If the lamp has an optional integral switch, that switch has three separate positions. The first position provides a ground path independent of the door jamb switches to turn the lamp On. The second, or center position allows the door jamb switches to control the lamp. The third position segregates that lamp from the door jamb switch input, turning the lamp Off. In the case of the optional dome/reading lamp, the integral lamp switch has a fourth position which will illuminate only the reading lamp bulb.

VAN MODELS
Unless a van model is equipped with an optional remote cargo lamp switch, all of the lamps in the interior lighting circuit operate the same way as the wagon models except that there are only two door jamb switches, one for each front door. If the vehicle is equipped with an optional remote cargo lamp switch, the lamps in the rear of the vehicle on the interior lighting circuit are provided with battery current by the time delay relay. The time delay relay is a smart relay containing active electronic elements that comprise an electronic timer logic circuit. When the remote cargo lamp switches provide the proper input to the time delay relay, the relay logic responds by energizing the relay control coil. The energized relay control coil provides battery current to all of the lamps on the rear interior lighting circuit and to the indicator Light-Emitting Diode (LED) units in the remote cargo switches causing each to illuminate. If a remote cargo lamp switch remains On for more than about fifteen minutes, the time delay relay will then automatically de-energize the rear interior lighting circuits until the remote cargo lamp switch is cycled Off and then back On.

EXTERIOR LIGHTING CIRCUIT
The exterior lighting circuit provides battery current to the optional ash receiver/cigar lighter lamp and to the illumination Light-Emitting Diode (LED) unit within the remote cargo lamp switch in the instrument panel accessory switch bezel whenever the exterior lamps are turned On.