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Old 10-19-2018, 12:47 PM   #1
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Solar vs. Harbor Freight

I've just bought a Roo 19 that has a Zamp plug-in that, I presume, is connected to my 12-volt marine battery.

I was wondering if I could reverse the polarization of the Zamp plug-in with an SAE adapter and plug in the $149 100-watt solar from Harbor Freight?

Please keep your answer simple so I can understand. I've read lot of FR's solar talk, and it's for an electrician, not me.
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Old 10-19-2018, 01:32 PM   #2
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Yes.
Better to hook up straight to the battery from the charge controller as the Zamp wires are a bit smaller than they maybe should be.
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Old 10-19-2018, 03:13 PM   #3
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Originally Posted by brl1956 View Post
I've just bought a Roo 19 that has a Zamp plug-in that, I presume, is connected to my 12-volt marine battery.

I was wondering if I could reverse the polarization of the Zamp plug-in with an SAE adapter and plug in the $149 100-watt solar from Harbor Freight?

Please keep your answer simple so I can understand. I've read lot of FR's solar talk, and it's for an electrician, not me.
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Originally Posted by MtBiker View Post
Yes.
Better to hook up straight to the battery from the charge controller as the Zamp wires are a bit smaller than they maybe should be.
A 100 watt panel will only put out 6.5 amps max. The Zamp 12 AWG plug wire is enough for <20 feet.
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Old 10-19-2018, 04:55 PM   #4
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A 100 watt panel will only put out 6.5 amps max. The Zamp 12 AWG plug wire is enough for <20 feet.
Sorry, but an extremely elementary question here ... so, you're saying that I'm already running internally the Zamp 12 AWG plug on my '15 Roo, and to plug in one 100w solar panel won't require re-wiring straight to the battery?
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Old 10-19-2018, 05:17 PM   #5
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Originally Posted by brl1956 View Post
Sorry, but an extremely elementary question here ... so, you're saying that I'm already running internally the Zamp 12 AWG plug on my '15 Roo, and to plug in one 100w solar panel won't require re-wiring straight to the battery?
12 AWG wiring is good for 15-20 amps when running 12v power as long as the wire length is under 15 feet. for one 12v solar panel, your current wiring size fine and does not need to be changed. you will however, want to check the polarity of the plugs. some of the Zamp connectors are wired backwards.

Edit: i see you have figured out the polarity issue already. the rest is plug and play!
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Old 10-19-2018, 06:16 PM   #6
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Your presumptions are correct... the Zamp plug is connected directly to the battery. (usually with 12 ga. wiring as mentioned)
And yes, the Zamp plug is reverse polarity from standard so an adapter is necessary unless you'd rewire one of the plugs.

Remember, there's no charge controller in the Zamp plug so make sure the panel you purchase has one.
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Old 10-19-2018, 06:48 PM   #7
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Your presumptions are correct... the Zamp plug is connected directly to the battery. (usually with 12 ga. wiring as mentioned)
And yes, the Zamp plug is reverse polarity from standard so an adapter is necessary unless you'd rewire one of the plugs.

Remember, there's no charge controller in the Zamp plug so make sure the panel you purchase has one.
Well, that brings up another question regarding the charge controller ... Does my '15 Roo have a controller for the solar? And where on the trailer should I look for it? If you don't think it has one, should I buy one? What kind?
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Old 10-19-2018, 10:10 PM   #8
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No, the trailer does not come with one.
If you are buying Harbor Freight panels, they have controllers. Some of their 'kits' have everything.
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Old 10-19-2018, 10:40 PM   #9
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My Zamp wiring from the plug to the battery is 14 gauge wire on my 2016 2504s. I found that out when I reversed polarity so I could plug in my 1.5 amp battery charger/ maintainer. Jay
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Old 10-20-2018, 01:15 AM   #10
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My Zamp wiring from the plug to the battery is 14 gauge wire on my 2016 2504s. I found that out when I reversed polarity so I could plug in my 1.5 amp battery charger/ maintainer. Jay
14 AWG is still good for 10 amps at <10 foot.

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