I just opened my 97 T&C to get out the owner's manual to see what it says. All of the interior lights came on: the map lights, the dome light and the in-door lights. According to the manual, they are all controlled by the wheel next to the headlight/fog switch. To quote:
Interior Lights
Interior lights are turned on when the doors or liftgate are opened, the keyless entry transmitter is activated, or when the dimmer control is moved to the extreme top. The interior lights will automatically turn off in approx 15 minutes if any of the following occur:
- A door or liftgate is left open.
- Any overhead reading light is left on.
- If the dimmer control is in the extreme top position.
If the key is left in the ignition this feature will not be activated. If any door or light switch is used, it will reset the timer.
Dimmer Control
With the park lights or headlights on, rotate the control up to increase the brightness of the instrument panel lights. Rotate the dimmer control to its first detent position above the dimmer range to turn on all vacuum fluorescent displays (radio, compass, electronic cluster) to full daytime brightness. Rotate the dimmer control to the extreme top, past the detent, to turn on the interior lights, except the front reading/courtesy lights. Rotate the dimmer control to the extreme bottom, past the detent, to activate the Interior Lights Defeat Feature.
Hope that helps.