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08-10-2020, 02:23 AM
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#1
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Platinum Member
Join Date: Mar 2008
Location: Gig Harbor, WA
Posts: 372
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Connecting Solar to 2009 R/T.
Hello everyone. It has been a while since I last posted anything.
I have recently retired and and now modifying our 2009 R/T Versatile again.
I am looking for the best point to connect the wiring for a small solar panel system. Our panel is not going to be mounted to the roof, but be on a long cord, so we can place the panel in the sun, while the rig is parked in the shade.
There are probably 10 different places to connect the leads from the MPPT controller, to the battery system. I don't want to use the alligator clips, directly to a battery. I suspect there is a simple/safe connection for the power input, I just don't know which is the best.
Also, I know that many of the installers just use the easiest (least time needed) route, not necessarily the "best" option.
Any help you can offer is appreciated.
__________________
Brian
2009 Roadtrek 190V, 5" lift - Build Thread
2004 Toyota 4Runner
2014 Honda CR-V
1965 Dodge Coronet 440
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08-10-2020, 02:34 AM
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#2
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Platinum Member
Join Date: Aug 2010
Location: Minnesota
Posts: 12,392
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Quote:
Originally Posted by Photog
Hello everyone. It has been a while since I last posted anything.
I have recently retired and and now modifying our 2009 R/T Versatile again.
I am looking for the best point to connect the wiring for a small solar panel system. Our panel is not going to be mounted to the roof, but be on a long cord, so we can place the panel in the sun, while the rig is parked in the shade.
There are probably 10 different places to connect the leads from the MPPT controller, to the battery system. I don't want to use the alligator clips, directly to a battery. I suspect there is a simple/safe connection for the power input, I just don't know which is the best.
Also, I know that many of the installers just use the easiest (least time needed) route, not necessarily the "best" option.
Any help you can offer is appreciated.
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I think I would put a fused two wire cable to a watertight automotive style connector, right in the battery area behind the compartment door. All you have to do is unlock and open the door and plug it in, and when traveling the plug is inside a relatively dry area. The door can drop down onto the cord when in use, so mostly closed.
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08-10-2020, 03:29 AM
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#3
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Platinum Member
Join Date: Mar 2008
Location: Gig Harbor, WA
Posts: 372
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Of course.
Thanks Booster, that is a simple install. We have two batteries. I suspect they are wired in parallel, prior to the Inver/Charger system, so connecting to either one should charge them both.
I like this approach, and it is much easier than hooking into someplace near the Inverter/Charger.
Thanks.
__________________
Brian
2009 Roadtrek 190V, 5" lift - Build Thread
2004 Toyota 4Runner
2014 Honda CR-V
1965 Dodge Coronet 440
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08-10-2020, 04:28 AM
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#4
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Platinum Member
Join Date: Jul 2018
Location: Texas
Posts: 2,651
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My factory solar came wired to the positive 12v buss bar.
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08-10-2020, 05:48 AM
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#5
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Platinum Member
Join Date: Mar 2008
Location: Gig Harbor, WA
Posts: 372
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Quote:
Originally Posted by rowiebowie
My factory solar came wired to the positive 12v buss bar.
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Where is the 12V buss bar located in these rigs? Somewhere near the fuse panel?
__________________
Brian
2009 Roadtrek 190V, 5" lift - Build Thread
2004 Toyota 4Runner
2014 Honda CR-V
1965 Dodge Coronet 440
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08-10-2020, 07:40 AM
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#6
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Platinum Member
Join Date: Nov 2014
Location: PHX, AZ
Posts: 2,660
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Quote:
Originally Posted by booster
I think I would put a fused two wire cable to a watertight automotive style connector, right in the battery area behind the compartment door. ..
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this is what I do for my little solar panel
you need to ascertain how your batteries are wired-
if 12 volt they will be parallel, if 6 volt wired in series- you need to wire to the outside neg on one battery , the outside positive of the other
Mike
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08-10-2020, 11:06 AM
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#7
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Platinum Member
Join Date: Oct 2006
Location: New Brunswick, Canada
Posts: 8,828
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Quote:
Originally Posted by rowiebowie
My factory solar came wired to the positive 12v buss bar.
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That's really interesting to see. It's the high amp stuff each on it's own breaker but sharing a common input (output for the solar controller).
I doubt there's anything similar in a Roadtrek.
Thanks for sharing the photo. I can see using that idea if the need arises.
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08-10-2020, 03:12 PM
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#8
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Platinum Member
Join Date: Jul 2018
Location: Texas
Posts: 2,651
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Quote:
Originally Posted by Photog
Where is the 12V buss bar located in these rigs? Somewhere near the fuse panel?
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Generally, yes. At least in my '2012 Airstream Avenue the 30A, transfer switch, buss bar, solar, inverter/charger, and power center are adjacent to each other. May not always be the case or on your model, but generally builder's try to group electrical components nearby, probably for shorter wire & cable runs. When I did my 2 x 100Ah Lithium battery upgrade, I had just enough space in an adjoining cabinet to relocate the new batteries inside for cable runs of just 48" max. And could have been even shorter if I had not needed to run negatives through the shunt for my battery monitor.
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08-14-2020, 06:32 PM
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#9
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Platinum Member
Join Date: Oct 2006
Location: New Brunswick, Canada
Posts: 8,828
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Quote:
Originally Posted by Photog
.............
I am looking for the best point to connect the wiring for a small solar panel system. Our panel is not going to be mounted to the roof, but be on a long cord, so we can place the panel in the sun, while the rig is parked in the shade........................
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Another idea for you. It appears that the controller will be portable in addition to the panel. If so, this would work:
I think some RT's come with a 7-way tow receptacle but installed as a 4-way with the power wire(s) not installed. One house battery would be very close so it would be pretty easy to connect a fused positive and a negative wire on the receptacle. 10 AWG would be OK. Put a 7-way plug on the wires from the controller and it's a easy way to plug the portable setup in when needed.
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08-15-2020, 12:48 PM
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#10
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Platinum Member
Join Date: Nov 2015
Location: New Hamshire
Posts: 128
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Quote:
Originally Posted by markopolo
Another idea for you. It appears that the controller will be portable in addition to the panel. If so, this would work:
I think some RT's come with a 7-way tow receptacle but installed as a 4-way with the power wire(s) not installed. One house battery would be very close so it would be pretty easy to connect a fused positive and a negative wire on the receptacle. 10 AWG would be OK. Put a 7-way plug on the wires from the controller and it's a easy way to plug the portable setup in when needed.
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This is a good idea. Last year, I was trying to set up my 12C190P to tow my BiL's travel trailer. I was underneath the rear looking for a power point to charge the trailer battery. Towards the rear, behind the generator and up on the underside of the floor is a lug with 2 or 3 large power cables attached to it. If I recall they were always hot. As Markopolo suggested, you could use the 7 pin trailer connector and run the power cable through it to the lug. It would be a very short and easily accessible connection.
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08-15-2020, 02:36 PM
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#11
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Platinum Member
Join Date: Oct 2006
Location: New Brunswick, Canada
Posts: 8,828
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Tow receptacles can also become a convenient spot to get power. I have an adapter that plugs into the receptacle and provides two 12V accessory outlets for DC items & use it for a small portable compressor that plugs into the adapter & is used to inflate bike tires and the Air Lift bags.
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08-16-2020, 06:01 PM
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#12
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New Member
Join Date: Jul 2015
Location: California
Posts: 15
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I installed a 4-pin round trailer socket onto the front bumper, recessed back into the grille using a simple "L" bracket I made from sheet metal. The solar panel uses the mating connector. The output of the socket is wired to the charge controller, and the output of the controller is wired to the heavy-duty terminal on the battery separator.
https://www.amazon.com/58671-4-Way-R...a-571778778217
Incidentally, if your vehicle is equipped with the ubiquitous Sure Power 1315-200 Battery Separator, I'd recommend replacing it with the Blue Sea 7622 ML-ACR Automatic Charging Relay; otherwise, the 2 ampere relay current of the battery separator will effectively drain both batteries after the sun goes down until the voltage reaches 12.5 Vdc. This totally defeats the purpose of having the solar panels. The Blue Sea uses power for its relay coil only when it connects or disconnects, drawing a minuscule few mA continuously for the voltage monitoring circuit.
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08-16-2020, 11:34 PM
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#13
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Platinum Member
Join Date: Mar 2018
Location: Tinley Park IL
Posts: 368
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Just posted a simple solution. See resent subjects related to this
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