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Old 05-11-2014, 09:05 AM   #1
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2013 CR-V battery going down while towing

I know this is beat to death on this forum but I have the problem. Now, I have a charge line installed. I checked the line from end to end. The line is 12awg. We towed about 450 miles with 2 overnight stops and no disconnects. Ran through the Honda recommended towing procedures 5 times on this trip. Now, we unhook, go to start the car, and it struggles to start. I put a charger on it overnight. I am using the SMI Stay n play brake system. Did not remove any fuses. Any thoughts what my problem is?
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Old 05-11-2014, 11:25 AM   #2
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Quote:
Originally Posted by BLAdventurer View Post
I know this is beat to death on this forum but I have the problem. Now, I have a charge line installed. I checked the line from end to end. The line is 12awg. We towed about 450 miles with 2 overnight stops and no disconnects. Ran through the Honda recommended towing procedures 5 times on this trip. Now, we unhook, go to start the car, and it struggles to start. I put a charger on it overnight. I am using the SMI Stay n play brake system. Did not remove any fuses. Any thoughts what my problem is?
I have the same set up for my CRV. There should be a fuse at Each End of the charge line. One at the MH connection and one at the Toad connection.
With the cord plugged in,
First check for power at the connection to the toad battery on the MH side of the fuse. If you check the toad side of the fuse you will only see the toad battery voltage. If you don't see voltage, check both fuses.
I'm assuming the connection was tested initially to make sure there is power from the MH to the Toad. If your fuses are good and still no voltage, you need to look at the connections and make sure they line up.
The attached should help.

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Old 05-11-2014, 04:13 PM   #3
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If you are sure the 12 v is correct Check the ground
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Old 05-11-2014, 04:45 PM   #4
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Often the charge line is overwhelmed by the lights.. The ground on most tow harnesses is way too light in my humble opinion, you need like 10GA for that wire. Or heavier (8ga).
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Old 05-11-2014, 07:11 PM   #5
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We had a similar problem. On our Damon Tuscany the chassis is from Freightliner. In the rear electrical bay there are two 12 volt fuse boxes. One box has a 20 amp fuse that was blown. Was told that fuse goes to the towed connector and the power is hot thru the ignition switch. We tested and it is. After blowing several fuses the answer was to install one of the fuses that resets itself (about 8 bucks). Since installing the new fuse we haven't had any problems.
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Old 05-12-2014, 09:27 AM   #6
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Thank you to all who have responded. I have 12V and no fuses have blown. Ground my be my problem. I will have to check when back home.
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