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Old 06-16-2019, 07:41 PM   #1
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Towing a 2015 Chevy Colorado with a Demco Stay-In-play system installed

Hello everyone,

I am new to RVing and to this forum. I have a 2015 Chevy Colorado that I will be towing behind my RV. I just had a Demco Stay-in-Play system installed and that system has a button to disconnect my battery. Yet my owner’s manual states that I must disconnect my negative terminal from my battery. Everything I can find says I don’t have to do that with the Stay-In-Play system. Can anyone provide any guidance if I need to disconnect the negative side of my battery with this system installed? Also, what is the logic for doing the disconnect? Thank you for your help.
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Old 06-17-2019, 05:29 AM   #2
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Towing a 2015 Chevy Colorado with a Demco Stay-In-play system installed

You need to disconnect due to the electric power steering.

Not sure I follow your question on the Demco system disconnecting the power, do you have a power disconnect? If it is disconnecting power from the chassis you should be okay.

I have the Roadmaster disconnect but it disconnects the positive side of the battery.
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Old 06-17-2019, 10:17 AM   #3
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Hi ! Welcome to IRV2! We're sure glad you joined the gang!

Good luck, happy trails, and God bless!
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Old 06-17-2019, 10:27 AM   #4
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I have the Stay n Play on my towed and do not disconnect the battery. It does not have electric steering though. How will there be any power to stop the towed if the break away is activated with the battery disconnected. I would double check about that requirement before towing.
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Old 06-17-2019, 02:21 PM   #5
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Quote:
Originally Posted by znt1186 View Post
I have the Stay n Play on my towed and do not disconnect the battery. It does not have electric steering though. How will there be any power to stop the towed if the break away is activated with the battery disconnected. I would double check about that requirement before towing.

It is absolutely a requirement and damage to the truck will take place if not done. You power any towed accessories by connecting to the battery in the disconnected mode, i.e., you either have to go the negative or positive battery terminal directly when disconnected.


Etrailer has a video of installation in a 2018 Colorado, along with a list of required parts for installation and towing. Included in the list is the Roadmaster battery



https://www.etrailer.com/tv-install-...o-sm99251.aspx
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Old 06-24-2019, 08:09 AM   #6
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Thank you everyone

GM did say I MUST disconnect the negative cable from the battery. However, Demco says I must leave the negative cable for a system ground otherwise it may ground through the tow bar or motor home. That put me in the middle of what could be a real problem in the future of finger pointing. So I decided to remove the Demco Stay-in-play and will pursue different options in the future.

Once again thanks for the assistance
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Old 06-25-2019, 08:54 AM   #7
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GM won’t tell you to disconnect the positive due to liability. The Roadmaster RM766 is a clean disconnect. Post #16 has my final installation.

http://www.irv2.com/forums/f85/chevy...-399364-2.html
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Old 06-27-2019, 08:02 PM   #8
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I have a 2016 GMC Canyon. I use the Roadmaster (positive battery cable disconnect). Just because you disconnect the battery to the truck, doesn't mean you still can't use the battery. Just connect your brake system directly to the battery or ground. Your umbilical between the toad and coach has a ground in it that will ground everything between the two and other components.

I use the coach taillights to power the truck taillights so I don't need a battery connected. I also run the SMI Air Force One air brake system and I get power from the truck battery.
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Old 06-28-2019, 08:17 AM   #9
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We also have a positive disconnect switch for our SMI DUO brake system in our 2019 Colorado. Zero issues so far..
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