Is a Stop Light Switch Required for Flat Towing a 2016 Ford Focus

Question:

Can you explain the ability to trickle charge the battery in the Ford Focus.

asked by: Rodger

Expert Reply:

According to Roadmaster, a stop light switch like part # RM-751454 will be required in order for the vehicle's brake lights to illuminate while the using the SMI Stay-IN-Play DUO Supplemental Braking System part # SM99251 on your 2016 Ford Focus. Unfortunately, we do not have an installation video of the stop light switch at this time but all you will need to do to install the unit is mount the bracket directly behind the brake pedal and attach the power wire to the cold side of the brake pedal. You will need to use a circuit tester like part # PTW2992 in order to find the cold wire or the one that only activates while the brake pedal is depressed.

In order to maintain a charge on the vehicle's battery you will want to run a charge line kit like part # RM-156-25 from the RV's battery to the vehicle's battery.

expert reply by: Conner L

Rodger

1/2/2018

Can you explain the ability to trickle charge the battery in the Ford Focus.

Conner L.

1/2/2018

The Roadmaster Battery Charge Line Kit for Towed Vehicles part # RM-156-25 takes power from your RV while running and provides a small amount of charge to the vehicle's battery to prevent battery drain while in tow. The line essentially bridges the RV and tow vehicle's battery together through the trailer connector plug. If your RV is not already set up for a charge line then you will also need to use the Roadmaster Battery Charge Line Kit for Motor Homes part # RM-156-75. I have attached a sample installation video on both of the above kits for you as well.