Rear Windshield Washer Reservoir

Just bought a 2001 Dodge Durango. The windshield fluid light is on. I refilled the front reservoir but it was pretty full and the light did not go off. I assume that there is a second reservoir in the rear of the vehicle for the rear wiper but I cant find it. Any help would be great.
Thanks

I dont think there is a rear resovior in there, but id check the rear tailgate to see if u have a crimpled tube or missing tube, if by chance it does have a resovior in the rear it would prob be just a cap somewhere in the back gate area?? keep us informed.....

Look at your washer reservoir. IRRC both front and rear pumps are in there and the float; so there should be 3 connectors on the reservoir. Unplug the float connector and see if the light goes out.