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Gjac's avatar
Gjac
Explorer III
Aug 03, 2014

HWH Jack switch

I have an HWH 200 series jack system with the joy sticks. This last trip I had a hard time pushing the switch to the ON position. I remove the face plate and played with the switch and springs to get the panel to light and put the jacks down. When I returned home I removed the switch and tried to find a replacement at the local auto parts stores thinking it was just a on off rocker switch. I could not find a replacement for it. It is rated for 15 amps @ 125 v and 10 amps @ 250 amps so I found one in my spare parts in the garage, replace it but it blew the 5 amp fuse in the face plate twice. Is this a simple on off switch or some thing else? I have looked through the HWH electrical schematics that I have but can not find any info on this switch.
Class A
  • Gjac's avatar
    Gjac
    Explorer III
    Aug 05, 2014
    Just to conclude this thread in case anyone else has to replace this switch. I could not find the exact switch, but found one that was close, when I inserted it the leads contacted the rear joy stick beneath the face plate blowing the 5 amp fuse. I reversed the switch so the two leads would clear the metal joy stick and all is well again. With the switch being reversed I had to cover the on off on the face plate with black tape and use the I O on the switch.
  • Gjac's avatar
    Gjac
    Explorer III
    Aug 04, 2014
    dougrainer wrote:
    The switch is just a ON/OFF rocker switch nothing else. It just passes thru 12 volt positive power. IF you have a short, then the switch is too long and the terminals are touching ground or you have not reinstalled the plate cover correctly and something is grounding out. Doug

    This is the HWH P/N RP90315
    The switch is slightly longer, so I will check to see if it is grounding to one of the joy sticks underneath the plate. This looked like a simple replacement, but had me baffled when the fuses started to blow. Thanks Doug and Pete for clarifying this for me.
  • azpete's avatar
    azpete
    Explorer
    Aug 03, 2014
    was the insulating washers reinstalled on the new circuit board?
    that may be where the short is.
  • dougrainer's avatar
    dougrainer
    Nomad
    Aug 03, 2014
    Gjac wrote:
    azpete wrote:
    remove the top plate and check the springs underneath.
    these are the contacts for power to the joystick. make sure they are at 90 degrees from the plate. clean all the contact points and the ring inside the joystick with a pencil eraser to remove oxidation.
    that switch is the same as any light switch the same size. nothing special.
    buy at any rv store if they carry them in stock.
    if you are blowing the fuse, you have a short in the harness somewhere.
    i know that sounds obvious, but it could be a bad circuit board also.
    I don't blow the fuse with the old switch, it is just hard to push to open and I thought I would just replace it before it fails on a trip. I replaced it with the same rating rocker switch which blows the 5 amp fuse. Springs and contacts are all clean and circuit board was replaced last year. Unless the new switch is shorted out some how internally? Also I am assuming that it should not make a difference where the wires from underneath are attached? There are just two leads.


    If the new switch had an internal short, it would just stay ON all the time. You HAVE to have a ground path to blow a fuse. There is NO ground path on the switch. Doug
  • Gjac's avatar
    Gjac
    Explorer III
    Aug 03, 2014
    azpete wrote:
    remove the top plate and check the springs underneath.
    these are the contacts for power to the joystick. make sure they are at 90 degrees from the plate. clean all the contact points and the ring inside the joystick with a pencil eraser to remove oxidation.
    that switch is the same as any light switch the same size. nothing special.
    buy at any rv store if they carry them in stock.
    if you are blowing the fuse, you have a short in the harness somewhere.
    i know that sounds obvious, but it could be a bad circuit board also.
    I don't blow the fuse with the old switch, it is just hard to push to open and I thought I would just replace it before it fails on a trip. I replaced it with the same rating rocker switch which blows the 5 amp fuse. Springs and contacts are all clean and circuit board was replaced last year. Unless the new switch is shorted out some how internally? Also I am assuming that it should not make a difference where the wires from underneath are attached? There are just two leads.
  • dougrainer's avatar
    dougrainer
    Nomad
    Aug 03, 2014
    The switch is just a ON/OFF rocker switch nothing else. It just passes thru 12 volt positive power. IF you have a short, then the switch is too long and the terminals are touching ground or you have not reinstalled the plate cover correctly and something is grounding out. Doug

    This is the HWH P/N RP90315
  • azpete's avatar
    azpete
    Explorer
    Aug 03, 2014
    remove the top plate and check the springs underneath.
    these are the contacts for power to the joystick. make sure they are at 90 degrees from the plate. clean all the contact points and the ring inside the joystick with a pencil eraser to remove oxidation.
    that switch is the same as any light switch the same size. nothing special.
    buy at any rv store if they carry them in stock.
    if you are blowing the fuse, you have a short in the harness somewhere.
    i know that sounds obvious, but it could be a bad circuit board also.

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