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12-27-2021, 05:59 AM
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#1
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Senior Member
Join Date: Dec 2021
Location: Richmond
Posts: 339
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What is this wire?
I have a new to me 2019 Passport 2520RL that I bought from the original owner two weeks ago. It was a good transaction and the guy and his wife seemed to be very honest and open about the TT. I found this disconnected wire on the battery and the PO does not know anything about it, and I believe him. The wire has pulled out of the yellow connector at the bottom of the positive terminal. It has a 10amp inline fuse. I can't find anything on the TT that is not working. Anyone have any ideas what this might be for? I'm tempted to reconnect it and see.
__________________
Lee
2019 Keystone Passport GT Ultra Lite 2520RL, 7000lb GVW,
2015 F150 5.0, XLT/FX4, 3.55 Tow, 7000lb GVWR, 1829lb payload, 36 gal tank,
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12-27-2021, 07:47 AM
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#2
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Site Team
Join Date: Jul 2014
Location: Modesto
Posts: 20,357
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Probably the charge line for solar.
__________________
2012 Copper Canyon 273FWRET being towed by a 1994 Ford F350 CC,LB,Dually diesel.
Airlift 5000 bags, Prodigy brake control, 5 gauges on the pillar.Used to tow a '97 Jayco 323RKS.
Now an RVIA registered tech. Retired from Law enforcement in 2008 after 25+ yrs.
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12-27-2021, 07:55 AM
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#3
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Senior Member
Join Date: Dec 2021
Location: Richmond
Posts: 339
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Quote:
Originally Posted by chuckster57
Probably the charge line for solar.
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That's a good thought. I can stick an ohm meter on that line to find out.
__________________
Lee
2019 Keystone Passport GT Ultra Lite 2520RL, 7000lb GVW,
2015 F150 5.0, XLT/FX4, 3.55 Tow, 7000lb GVWR, 1829lb payload, 36 gal tank,
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12-27-2021, 09:43 AM
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#4
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Senior Member
Join Date: Dec 2021
Location: Richmond
Posts: 339
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That's it! Thanks!!
Looks like the solar connection was an after thought.
__________________
Lee
2019 Keystone Passport GT Ultra Lite 2520RL, 7000lb GVW,
2015 F150 5.0, XLT/FX4, 3.55 Tow, 7000lb GVWR, 1829lb payload, 36 gal tank,
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12-27-2021, 10:18 AM
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#5
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Site Team
Join Date: Jul 2014
Location: Modesto
Posts: 20,357
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Factory will usually install a portable solar plug on the side of the trailer and run those wires to the battery.
__________________
2012 Copper Canyon 273FWRET being towed by a 1994 Ford F350 CC,LB,Dually diesel.
Airlift 5000 bags, Prodigy brake control, 5 gauges on the pillar.Used to tow a '97 Jayco 323RKS.
Now an RVIA registered tech. Retired from Law enforcement in 2008 after 25+ yrs.
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01-06-2022, 06:50 PM
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#6
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Senior Member
Join Date: Dec 2021
Location: Central Al
Posts: 118
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I notice it appears you have a black wire connected to the positive post on the battery. My question is Where is that going? I don’t have a passport, but I have two red and two black wires connected to my battery but the two black are going to the negative terminal and two red to positive terminal.
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2019 Keystone Bullet QBS287, 2014 Tundra Crewmax 5.7
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01-06-2022, 06:52 PM
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#7
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Site Team
Join Date: Jul 2014
Location: Modesto
Posts: 20,357
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Quote:
Originally Posted by Bustinbeards
I notice it appears you have a black wire connected to the positive post on the battery. My question is Where is that going? I I don’t have a passport, but I have two red and two black wires connected to my battery but the two black are going to the negative terminal and two red to positive terminal.
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Depending on year, positive can be black or red and negative can be black or white. I’ve seen both.
__________________
2012 Copper Canyon 273FWRET being towed by a 1994 Ford F350 CC,LB,Dually diesel.
Airlift 5000 bags, Prodigy brake control, 5 gauges on the pillar.Used to tow a '97 Jayco 323RKS.
Now an RVIA registered tech. Retired from Law enforcement in 2008 after 25+ yrs.
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01-07-2022, 04:46 AM
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#8
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Senior Member
Join Date: Dec 2021
Location: Richmond
Posts: 339
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Quote:
Originally Posted by chuckster57
Depending on year, positive can be black or red and negative can be black or white. I’ve seen both.
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I'm an Electrical Engineer and I find it frustrating that Black is not always ground. In house wiring Black is hot and White is ground. Go figure...
__________________
Lee
2019 Keystone Passport GT Ultra Lite 2520RL, 7000lb GVW,
2015 F150 5.0, XLT/FX4, 3.55 Tow, 7000lb GVWR, 1829lb payload, 36 gal tank,
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01-07-2022, 05:09 AM
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#9
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Senior Member
Join Date: Dec 2021
Location: Richmond
Posts: 339
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Quote:
Originally Posted by Bustinbeards
I notice it appears you have a black wire connected to the positive post on the battery. My question is Where is that going? I don’t have a passport, but I have two red and two black wires connected to my battery but the two black are going to the negative terminal and two red to positive terminal.
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That's the positive lead for the motorized hitch/jack. They should have made it red, but they made it black.
__________________
Lee
2019 Keystone Passport GT Ultra Lite 2520RL, 7000lb GVW,
2015 F150 5.0, XLT/FX4, 3.55 Tow, 7000lb GVWR, 1829lb payload, 36 gal tank,
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01-07-2022, 06:40 AM
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#10
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Site Team
Join Date: Oct 2011
Location: Joppa, MD
Posts: 11,763
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Quote:
Originally Posted by hlh1
I'm an Electrical Engineer and I find it frustrating that Black is not always ground. In house wiring Black is hot and White is ground. Go figure...
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The trailer isn't a house and I'm guessing that in the past Keystone wired the battery that way thinking the owner would recognize white as ground (in some people's thinking instead of neutral) and would recognize the color code from their home wiring. That's a guess, and I'd "guess" the person that made that decision didn't think thru that maybe the owner has looked at the battery cables in their truck. In any event, yes it caused and still causes a lot of confusion and blown polarity fuses.
Just another example of how important it is to take a moment and look things over before tearing it apart. With every cell phone having a camera these days it's so easy to just take a "before" picture and referencing it upon reassembly.
__________________
Marshall
2012 Laredo 303 TG
2010 F250 LT Super Cab, long bed, 4X4, 6.4 Turbo Diesel
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