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03-27-2022, 05:20 PM
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#1
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New Member
Join Date: Oct 2018
Location: West Kelowna
Posts: 7
M.O.C. #22906
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Fuse
Hi there,
I managed to short circuit my trailers 7 pin harness. Can’t seem to find a blown fuse! Any ideas?
Ken
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03-27-2022, 05:47 PM
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#2
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Montana Fan
Join Date: Jun 2019
Location: new river
Posts: 413
M.O.C. #24181
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i am guessing it is the truck fuse you are referrring to?
al meyer
3931fb
az
__________________
al meyer
3931fb
az
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03-27-2022, 06:10 PM
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#3
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New Member
Join Date: Oct 2018
Location: West Kelowna
Posts: 7
M.O.C. #22906
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Fuse
Hi
No the truck wasn’t hooked up so it is on the trailer side!
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03-27-2022, 06:15 PM
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#4
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Site Team
Join Date: Sep 2017
Location: Oro Valley
Posts: 3,923
M.O.C. #20477
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Ken,
Please give us more info. What is not working? How did you short circuit the harness.
__________________
Zack and Donna plus Millie and Ranger
2018 3160RL
"Life is too short to stay indoors, enjoy the ride!"
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03-27-2022, 06:17 PM
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#5
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New Member
Join Date: Oct 2018
Location: West Kelowna
Posts: 7
M.O.C. #22906
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Fuse
Hi
I used a “hack “ to light up the clearance lights on the rig!
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03-27-2022, 06:22 PM
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#6
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Site Team
Join Date: Sep 2017
Location: Oro Valley
Posts: 3,923
M.O.C. #20477
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Hook up the connector to your truck.
Do all the lights work, brake lights, running lights and tail lights? Do the electric brakes work? With the truck running you can also check to see if you are getting charging current from the truck.
What is not working after the short circuit?
__________________
Zack and Donna plus Millie and Ranger
2018 3160RL
"Life is too short to stay indoors, enjoy the ride!"
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03-27-2022, 06:30 PM
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#7
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New Member
Join Date: Oct 2018
Location: West Kelowna
Posts: 7
M.O.C. #22906
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Hi
Clearance lights work when hooked to truck. They don’t work when I use the “hack” by crossing the 2 top pins.
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03-27-2022, 06:35 PM
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#8
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Montana Fan
Join Date: Jun 2019
Location: new river
Posts: 413
M.O.C. #24181
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sorry what is a hack?
al meyer
3931fb
az
__________________
al meyer
3931fb
az
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03-27-2022, 06:38 PM
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#9
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New Member
Join Date: Oct 2018
Location: West Kelowna
Posts: 7
M.O.C. #22906
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Hi
Cross the top two pins in the 7 pin connector to complete the circuit and the clearance lights come on using the batteries in the trailer.
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03-27-2022, 07:19 PM
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#10
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Site Team
Join Date: Oct 2005
Location: Carmichael - CA
Posts: 7,359
M.O.C. #4831
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This should work fine. Be sure you have a battery in the RV. In the diagram below, jump the plug at pins #3 and #4 using a 15 amp blade fuse bent to fit (or a 12V flasher relay if you want to drive neighbors nuts - right Jack?).
__________________
Carl (n Susan)
There is more to life than fuel mileage.
2012 Montana 3700RL Big Sky Package towed by a 2015 Ford F350 6.7L PSD 4WD CC LWB
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03-27-2022, 07:23 PM
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#11
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Montana Master
Join Date: Oct 2012
Location: Box Elder
Posts: 4,690
M.O.C. #12947
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Before any other answers can be guessed at, you need to identify what year and model rig you have.
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Bob & Becky
2012 3402RL
2012 Chevy 2500HD D/A CC 4WD
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03-27-2022, 07:28 PM
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#12
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Montana Master
Join Date: Oct 2012
Location: Box Elder
Posts: 4,690
M.O.C. #12947
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I’m thinking he toasted the 40 breaker on the wall behind the batteries.
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Bob & Becky
2012 3402RL
2012 Chevy 2500HD D/A CC 4WD
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03-27-2022, 07:28 PM
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#13
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New Member
Join Date: Oct 2018
Location: West Kelowna
Posts: 7
M.O.C. #22906
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Fuse
It’s a 2012 High Country 343 RL
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03-27-2022, 07:41 PM
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#14
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Site Team
Join Date: Oct 2005
Location: Carmichael - CA
Posts: 7,359
M.O.C. #4831
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Quote:
Originally Posted by rohrmann
I’m thinking he toasted the 40 breaker on the wall behind the batteries.
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I don't see how he could do that *IF* he did what he described. And it is easy to check for 12V on Pin #4 with a VOM to see if there is power.
But the op still hasn't specifically described what is not working and his year/model RV.
__________________
Carl (n Susan)
There is more to life than fuel mileage.
2012 Montana 3700RL Big Sky Package towed by a 2015 Ford F350 6.7L PSD 4WD CC LWB
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03-27-2022, 08:28 PM
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#15
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Montana Master
Join Date: Oct 2006
Location: McKinney
Posts: 7,159
M.O.C. #6433
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He did say the clearance lights work when connected to the truck, but not when disconnected and he jumpered pins 4 and 3.
Pin 4 from the power cord has to go back to the battery somewhere. If you do not have +12 vdc on pin 4, did you look in the battery area to see if there is an in-line fuse to that plug?
__________________
Bill & Patricia
Riley, our Golden
2007 3075RL (recently sold, currently without)
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03-27-2022, 10:40 PM
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#16
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New Member
Join Date: Oct 2018
Location: West Kelowna
Posts: 7
M.O.C. #22906
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Will check tomorrow thanks
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