On a 1999 Ford Expedition : The washer fluid for the rear liftgate is supplied by the same reservoir for the front windshield ( located in the engine compartment )
The rear washer fluid come from the windshield washer fluid reservoir on your 1999 Ford Expedition ( according to the owners manual )
On all doors front and rear 6x8.
check fuses
Which Compressor are you talking about ? The a/c compressor or the rear suspention Compressor ?
On a 1999 Ford Expedition : A4WD ( Automatic four Wheel Drive ) delivers power to the rear wheels and if the rear wheels lose traction ( slip ) some of the power is transfered to the front wheels
The rear differential plug is located on the inside top part of the differential. Where the drive shaft connects.
rear wheel drive ( and if equipped 4x4 capable )
Yes.
90% of the time it is the temp mode door actuator located in the driverside rear of the truck
On the rear of the transfer case, near the output.
On a 1999 Ford Expedition : 2 wheel drive with standard suspension ( 26.0 U.S. gallons ) 4x4 and 2 wheel drive with rear air suspension ( 30.0 U.S. gallons )