If it the same as the 1998 model, there should be a black plastic box on the right side of the engine compartment that says "remove to service air filter element below", the filter is NOT in this box, it is in another plastic box below this one. You must remove the two screws on the box you see, romove the two hoses connected to it, one you just pull off, the other you must remove a clamp to remove. After you do this you can see the box containing the filter it is set vertically and has two metal clips keeping it closed, just reomve the clips, and change the filter, dont forget to replace both hoses and both screws.
A 1999 Dodge Caravan does not have a cabin filter.
A 1999 Caravan does not have a cabin filter.
You don't clean the oil filter you replace it.
Have a look at this link: http://www.wikihow.com/Replace-a-Tail-Light-on-a-Dodge-Grand-Caravan
On top of the fuel tank.
Inside the oil pan
It should be located near the oil filter.
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