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Our rescue truck at work has one, you have to press the parking break in on an automatic before it will activate any type of high idle. I think a 6 speed has to be in neutral with the parking brake pushed in...ours is automatic. I usually use the Battery Charge protect on a emergency scene since I'm running all the lights and such. Note that the PTO high idle locks the torque converter so the engine will burn a little more fuel using it than BCP. When I did the high idle mod on my 06 personal truck I hooked it to BCP because I didn't want the converter to lock. I can't remember what other features it has I'll have to check the one out at work tommorrow, I think primarily it's an high idle control box. BTW USAF Rescue Truck.
Our rescue truck at work has one, you have to press the parking break in on an automatic before it will activate any type of high idle. I think a 6 speed has to be in neutral with the parking brake pushed in...ours is automatic. I usually use the Battery Charge protect on a emergency scene since I'm running all the lights and such. Note that the PTO high idle locks the torque converter so the engine will burn a little more fuel using it than BCP. When I did the high idle mod on my 06 personal truck I hooked it to BCP because I didn't want the converter to lock. I can't remember what other features it has I'll have to check the one out at work tommorrow, I think primarily it's an high idle control box. BTW USAF Rescue Truck.