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Availability of Battery Disconnect Switch for Flat Towing 2016 Ford Focus


We have a 2016 Ford Focus and need to disconnect the negative battery cable. The dealer installed a Stay and Play Duo braking system that requires the negative cable to be connected. Is there a switch we can install that will disconnect the negative from the vehicle, but still allow power to the braking system?


Expert Reply:

Disconnecting the negative battery cable in your 2016 Ford Focus, either manually or via a switch, will still allow the battery to provide power to a braking system like the SMI Stay-IN-Play DUO # SM99251 referenced in your question. This is because disconnecting the negative cable will disconnect the battery from the vehicle, but will not prevent it from providing power to other components.

If you are interested in installing a battery disconnect switch in your Ford Focus, you can use the Roadmaster Automatic Battery Disconnect with Switch for Towed Vehicle # RM-766. This will allow you to conveniently disconnect your battery from inside the car. I have attached a helpful installation video on a 2015 Ford Focus. You can see in the video that the Focus also has the Stay-IN-Play DUO installed.

expert reply by:
Chris R

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