On the right side of the throttle pedal
there are two old style fuses in line behind the fridge you must pull the fridge out of the cabinet to check them
Curb weight for a 780 is typically between 18,000 - 19,000 lbs.
Assuming you're referring to a Volvo VNL 780 truck, with the double bunk sleeper, 12'6".
You'd have to contact Volvo customer service for this. IIRC, there were a couple different options for the 730 and 780.
There isn't a reservoir. Fluid goes directly into the transmission housing.
with a fridge
96 inches.
Try seaking seal
Volvo dealership. Have fun with that... if you've never taken off a Volvo starter, you could be in for a lot of excitement.
16"
Left side of the engine compartment, usually mounted to the engine itself. Specific location depends on the engine.