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The best thing I can think of to control the power steering is put it on a manual momentary switch wired to a time delay off relay that gives me between I am thinking 10 and 20 seconds of power steering per push of the switch.
Then place the switch on the center console so I can hold it down continuously if needed.
Driving the 3/4 ton suburban with power steering disconnected I have found that I don't need it most of the time. Backing up the trailer I will most certainly need it.
I believe the duty cycle of the hydraulic power unit is 2 to 3 minutes on, 8 to 10 minutes off. Depending on the load, temperature, ect.
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1984 chevy suburban, custom made 6.5L diesel turbocharged with a Garrett T76 and Holset HE351VE, 22:1 compression 13psi of intercooled boost.
1989 firebird mostly stock. Aside from the 6-speed manual trans, corvette gen 5 front brakes, 1LE drive shaft, 4th Gen disc brake fbody rear end.
2011 leaf SL, white, portable 240v CHAdeMO, trailer hitch, new batt as of 2014.
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