Where do you fill the washer fluid for rear wiper on a 1997 Chrysler town and country?

The 1997 Chrysler Town & Country uses a single washer fluid reservoir for both the front and rear wipers. There's no separate reservoir for the rear wiper. You'll find the filler cap, usually marked with a washer fluid symbol (looks like a spray nozzle), in the engine compartment, typically near the windshield washer reservoir itself.