Forum Discussion
MrWizard
Oct 30, 2012Moderator
glad you got it fixed
on another note
i have too assume, your pump does NOT run all the time
mine does NOT
that means yes, there is a switch or relay or some thing controlling it
mine is tied to the brake light switch, for the signal and a pressure switch on the brake line, so the aux pump only works when there is NO running engine and NO power steering/hyd pump but the key is on and the brake is pressed
i imagine if i lost power to the key switch the pump would NOT come on because of a lack of brake signal
i may have to test that some day while parked
on another note
When looking at my chassis wiring diagram, the hydro-boost pump is powered directly from the engine battery junction box via a 60A fuse. There are no disconnect power relays in the line.
How anyone could modify/defeat the Hydro-boost system and ASSUMED it still complied with the standard, borders on criminal culpability. JM2¢...
i have too assume, your pump does NOT run all the time
mine does NOT
that means yes, there is a switch or relay or some thing controlling it
mine is tied to the brake light switch, for the signal and a pressure switch on the brake line, so the aux pump only works when there is NO running engine and NO power steering/hyd pump but the key is on and the brake is pressed
i imagine if i lost power to the key switch the pump would NOT come on because of a lack of brake signal
i may have to test that some day while parked
About Motorhome Group
38,705 PostsLatest Activity: Jan 23, 2025