how do i change power steering hose 89 protege

Robert, I could not find a video, when you begin to get back in to the 80's it gets more and more difficult to find how~to videos on stuff like this. but here is a generic picture of the high pressure hose, I am going under the assumption you do mean the high pressure, as it also has a return hose. Even if it does not look exactly like this, it will be similar, it has a fitting with an 'O ring' be sure that O ring is on the fitting if it does not come that way, usually they put them in a little plastic bag and tape it on the hose. There is no trick or special tools needed, just unscrew the fittings on both ends of your old hose, it may be one of those hoses (it will come pre~formed to fit) with a clamp in the hose on a bracket to secure it. Some of the pictures I fgound for your '89 show a steel part in the middle, if yours has that ..that is where the clamp goes so you are not clamping down on the rubber part. Anyway, just unscrew both ends and any mounting clamps, and put the new hose on the same way, again make sure the O ring is in place, tighten moderately, don't over torque the fittings, re fill reservoir with P/S fluid, drive around the block and top off fluid, If it squeals when you first start the car and turn the wheel, put more fluid in until is will run and turn without making any noise, THEN drive around the block, turn the wheel to it's stops both directions, (don't hold it there) check fluid again, (there should be a dipstick on the cap) DO NOT OVERFILL, done.

That is a '89 up there yours may be the same, see the part I was talking about in the middle? That is where it clamps to a bracket. Yours may look like this

The only difference I see is the one on top has male fittings and o rings, the bottom is a female flared fitting that has a probably steel or maybe brass male fitting on the pump and other end, You should use a wrench to hold that fitting in place while unscrewing the old hose, it's best to not take it out sometimes it will unscrew out before the flared fitting on the hose comes loose

Perfect answer from above, obviously don't forget make up oil when your at the store, also you will need several rags and a can or something to catch what little bit of oil will leek out. Hey what the heck, do a oil change (if time) you'll already be dirty.