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Old 09-30-2015, 09:36 AM   #1
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Honda 2012 CRV Issue

New to RVing and just travelled from Fredericksburg, VA to Beckley, WV towing a Honda CRV 2012. No lights or other electric items on yet the battery was dead after five hours on road. Do I need to pull a fuse? Didn't indicate I had to in the owners manual. Leaving in two days for Kentucky and want to get this issue resolved before then. Thanks for any suggestions.
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Old 09-30-2015, 12:33 PM   #2
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Honda recommends when towing for long periods to remove the 7 1/2 amp accessory radio fuse.

Hope this will solve your problem.
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Old 09-30-2015, 02:08 PM   #3
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Honda recommends when towing for long periods to remove the 7 1/2 amp accessory radio fuse.

Hope this will solve your problem.
You can also install a switch. The bad news is that either option will loose the program settings in the radio according to our dealer. Our brake unit sends a trickle charge to the battery but we haven't towed far enough yet to know if that is sufficient.
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Old 09-30-2015, 11:44 PM   #4
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Yes and it is not fun to get to. I suggest getting some needle nose pliers and extra of those micro fuses cause they will easily fall behind the panel.
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Old 10-01-2015, 12:39 AM   #5
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Small solar panel on the dash to provide some charge?


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Old 10-01-2015, 09:08 AM   #6
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Wow... dead battery after 5 hours? That's a lot of power being drawn! My bet is there is something more than just the radio drain going on. They're good for normal parasitic current draw, but a solar panel won't stop that kind of discharge.
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Old 10-01-2015, 01:03 PM   #7
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Need to find where the drain is coming from. Disconnect battery and put a meter in the circuit. See what drain is. Pull fuses one at a time to find drain.
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Old 10-01-2015, 01:20 PM   #8
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Need to find where the drain is coming from. Disconnect battery and put a meter in the circuit. See what drain is. Pull fuses one at a time to find drain.

Be cautious with this.
Most cheap meters are fused at 10a.
Fluke goes up to 20.


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Old 10-01-2015, 02:05 PM   #9
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I installed a battery maintainer by brake buddy that you can find on Amazon for $20 or so. Hooks into your 12V feed from the 7-way plug harness. Worked like a charm for over 10,000 mile Alaska journey except for one time when the connection came loose. Sure beats pulling fuses and installing cutout switched.
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Old 10-01-2015, 02:14 PM   #10
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I put a switch on that fuse. I lost at least 5 behind the kick pad trying to pull or reinstall the fuse. I have a 2014 with navigation, and that staying on killed my battery in about 5 hours.
Haven't had any more problems.
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