turkeybirdie
Hi all,  getting ready to take our 1st trip in our 2019 Retro 177SE, up to the lakes in Plumas County, Ca.  Want to hook up the solar system from my old Roadtrek, consisting of 125 watt panel and charge controller.  When I plugged the charge controller into the plug on the side of the trailer, nothing happened.  When I hooked it directly into the deep cycle battery, it works just fine.  Where's the disconnect?  It seems, that contrary to advertised, it is not solar ready and compatible with any system.  Also, I have a water leak under the sink also and can't find the source.  Rather dismaying.  The RV Country Fresno people aren't calling me back despite several voicemail messages.
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mkevenson
turkeybirdie, thanks for posting. I have not tried my solar panels yet and this post reminds me to do it soon, before I need them!!!!
Mark
Please buy Made in USA
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mikes
The SAE connector on the side is normally wired directly to the battery. Did you use a meter to make sure the polarity was correct? Does the meter show 12V on the connector?
Mike
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TravelerGuy
Hi Turkeybirdie,
Agree with Mike about polarity.  Normally, with SAE connectors, on the "source" connector,  the exposed terminal is the ground, and the covered up connector is the positive.  Problem is that with a solar panel, both the jack on the trailer and the plug on the solar can be considered as the "source", so there's two ways to wire it.  I'd take a voltmeter and see which pin of the solar panel cable is positive, and then see which pin of the connector is positive.  On my 177SE, I had to re-wire the jack on the side of the camper anyway, because I mounted my solar controller inside the TT, but I think the polarity was originally opposite of what you need.  To reverse the polarity of the zamp connector would require removing the load center, locating the zamp connector leads, and reversing them.  Alternatively, a reversing plug in line between the solar panel system and the camper would do it.  If you use a reversing plug like in the photo, an advantage is the camper continues to be wired as a "source" and you can plug  lightbulbs, etc...  into the jack when you are not using solar.

SolarConnectorPolarityChanger-SAE.jpg 
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TravelerGuy
Also, I just had a leak under our sink, turns out that the crimp-on clamps they use on the two water hoses, may not clamp tight enough.  I replaced them with normal screw clamps.  I just posted a messsage about it recently, with a photo.
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turkeybirdie
Thanks so much to Mike and TravelerGuy.  You were spot on.  The solar on the side was wired ass backward.  I swapped out the red and black wires from the charge controller (after ascertaining that the bare plug on the receiver was indeed the hot) and lo and behold, everything works fine.  Now to address the leaking sink ( which actually isn't bad) as long as I don't use park or city water, which I hate anyway since it all tastes like swimming pool.  We have a sweetwater spring on our land from which we draw our water.  For extended trips, I have a 90 gal water bladder which lasted us 6 weeks in Baja a couple of years ago.  Anyway, I'm sure glad I found you fellow Retro owners
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