The Power Steering fluid reservoir is up on the passenger side wheel well in the engine bay. Looks like a short fat silver coke can with hoses coming out of it. On a side note, the 300zx twin turbo uses ATF (automatic Transmission Fluid) not power steering fluid.
usually a green casing with black top. the following link is NOT a 300zx, but the reservoir is about the same.
http://www.sillbeer.com/images/engine/power-steering-reservoir.jpg
pictures of where to put power steering fluid in a 1990 buick lesabre
At the front left side of the engine, if you are looking under the hood.
A 1990 Nissan pickup truck has power steering. If the truck is displaying symptoms of not having power steering check the fluid levels and pump itself.
To add power steering fluid to your 1990 Plymouth Acclaim, locate the power steering reservoir, which is typically found near the front of the engine compartment, on the driver's side. The reservoir cap usually has a steering wheel icon or is labeled "Power Steering." Remove the cap, check the fluid level with the dipstick attached to the cap, and add the appropriate power steering fluid as needed. Be sure to replace the cap securely after adding fluid.
right next to the engine
Mercon Automatic Transmission Fluid, ATF.
The power steering fluid capacity for a 1990 Jaguar XJ6 is approximately 2.5 quarts (or about 2.4 liters). It is essential to use the recommended type of fluid, which is typically a ATF (Automatic Transmission Fluid) or specifically designed power steering fluid. Always check the owner's manual or consult a professional for the most accurate information and recommendations.
Dextron 11 (2)
Low fluid level? Bad steering pump? Worn steering rack?
the power steering reservoir would be to the front left (green casing with black top) this would be you facing the car from under the hood. the hose below it should route you to the power steering pump. it is also recommended to use ATF (Automatic Transmission Fluid) and NOT power steering fluid in the reservoir (from personal and professional experience, it leaks far less)this is what it would look like... but this is NOT the same car, but the part in question looks identical)
In the power steering reservoir on the front driver's side of the motor. It has a pulley attached to it. It located low between the fan shroud and the engine... The cap says power steering fluid... can't miss it.
in the power steering pump...should have a belt connecting to it..shouldn't be hard to find