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Re: f5fstop or anyone
You might need to pump the brakes to "bleed" off the assist each time before you tow and have the brake buddy set to a higher PSI like in a dead pedal situation.
Re: f5fstop or anyone
(Includes H3 Hummer)
Note: If the towed vehicle is equipped with hydro-boost where the hydraulic assist is coming from the power steering pump, the Unified Tow Brake will NOT work.
When the hydraulic assist is coming from a separate 12-volt DC pump, follow these steps:
1. Locate the 12-volt DC pump that supplies the hydraulic pressure for the hydro-boost system.
2. Using a test light, identify the wire that goes "hot" when the vehicles ignition is on and is "cold" when the ignition is off.
3. Once you have identified the correct wire, cut the factory wire and install a "blocking diode" into the factory wire that will protect the end of the factory wire that goes away from the DC pump.
4. Once the diode is installed, then you can splice in the "violet" wire in the Unified Tow Brake towed vehicle wiring harness that normally would be used to power the vacuum pump to power the hydro-boost DC pump. Install the "violet" wire into the newly installed "blocking diode" according to the diagram below.
Form 0510hydroboost (Rev. 10/05)
Re: f5fstop or anyone
Re: f5fstop or anyone
I had called brake buddy before you posted, all he said was let me know if I figure it out. Got back with him he was glad to have the info also. Time to go looking for the wires.
Don
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