KU40 wrote:Does anybody have some guesstimates on how much amperage the braking system uses when engaged as well as the power steering system while turning?
Virtually none from my knowledge of vehicles... Both are hydraulic systems... Steering using mechanical force of the steering wheel assisted by hydraulics, which are driven by the power steering pump.
Some cars do use electric motors to assist steering rather than hydraulics, but they are not very common and are usually only featured on smaller and somewhat more exotic cars, like the Acura NSX. Their current draw is a maximum of about 80 amps.
The brake system is also hydraulic, with the master cylinder at the brake pedal operating the cylinders on all four wheel braking mechanisms.
There may be some incidental/indirect power draw, perhaps from brake lights being turned on... But I wouldn't say this is more than a few amps. There is virtually no electrical load presented by either of these systems from the best of my knowledge.