Power Steering Pump Overheating

I have a 1978 Jeep Wagoneer with a 360 2bl carb. 5.9L. The Jeep is lifted 6 inches and has 35x17.5 inch tires, they are huge. I just bought it, so the history is not there. The power steering was horrible and fluid was leaking. I didn't even investigate it really I just bought two new hoses and a new power steering pump. Installed them and the power steering worked great. However within 2 or 3 minutes of it idling the power steering fluid got so hot I could not touch the pump without burning my hand. The pump is brand new, so my thinking is either I hooked something up wrong ie the supply to the return and the return to the supply, or the pump is faulty. I really don't think the pump is faulty because the steering was great. The lines were not labeled and I didn't take the time to really look at it before I took the supply and return lines off. Then I was thinking if I hooked it up backwards wouldn't the wheels turn the wrong way. Meaning if I turned the steering wheel left the tires would go right. Just an idea I had. Thoughts? Thanks