What Is Needed To Connect A Demco Stay-In-Play To A Motorhome's 4-Pole Connector

Question

Question:

Hello, I bought a Falcon All Terrain Tow Bar and the Demco Stay in Play Duo brake system for my Jeep Gladiator. My RV has a 4 pin flat connector. What kind of adapter would I need to attach the system to my RV? Thank you very much

asked by: Stefan H

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Expert Reply:

The Demco SBS Stay-IN-Play DUO Supplemental Braking System # SM99251 has a G-force controller that's only going to wire into the lighting signals that are already included in your 4-pole so you could get a diode wiring kit like # RM-154 (as long as you don't have ParkSense Proximity Sensors) and still use the 4-pole connector but you'd be much better off upgrading from the 4-pole to a 7-pole connector so that you can also run a charge line for your Gladiator.

To convert your motorhome's 4-pole to a 7-pole you'll need part # 37185. The 4-pole connector you have will plug into the connector on the adapter giving you your light functions and from there you'll need to make the following connections:

Blue Wire: This goes to the brake controller in your motorhome cab. If you don't have one or don't plan on using one to tow a trailer then you can just cap this off with some electrical tape and save it for later on when you do need one.

Black Wire: This goes to the battery with an in-line circuit breaker # 9510. You'll want to use some 10ga wire # 10-1-1 to get it to the battery.

White Wire: This is your ground and can just be run to the nearest part of the RV's frame and secured to it with a self-tapping screw.

Purple Wire: This is an auxiliary wire that can be used for reverse lights, reverse lockout for surge brake couplers, etc. but you'll most likely not need it so you can just cap it off with some electrical tape.

Once you have your 7-way in place you can then get started on the diode wiring for your Gladiator. I recommend using part # RM-152 along with # RM-910030-7 since your Nighthawk # RM-677 will come with the 7-way cable. If you have ParkSense Proximity Sensors then you'll need to swap out # RM-152 with # RM47ZR for LED tail lights or # RO94FR for incandescent lights.

Lastly, if you're not getting the Stay-In-Play that includes the coachlink monitor # DM86VR then you'll also need to install the Roadmaster Stop Light Switch Kit # RM-751497 so that the indicator light for your system can get the brake signal.

This can seem like a whole lot so if you have any questions then let me know and I can help walk you through it more.

expert reply by: Kevin C

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Answer 1

If your 2020 Jeep Gladiator activates the brake lights when the brake pedal is pressed with the key off then with the install of the SMI DUO part #SM99251 you will also need to install the brake lite relay part #RM-88400 so that the stoplights of the…

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Answer 2

The stoplight switch #RM-751490 and the monitor light that's included in the Demco SBS Stay-IN-Play DUO Supplemental Braking System #SM99251 do the same job, so you wouldn't need it if you decided to go with the Stay-IN-Play DUO. The…

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Answer 3

I do have a solution for you, however you will not be able to use a pin on your existing 4-Way for a battery charge line.In order to run charge line from the RV to your 2008 Jeep Wrangler battery, I first recommend installing the Roadmaster 6-Wire…

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Answer 4

The LED indicator light for your Demco Stay-IN-Play DUO Supplemental Braking System w/ Wireless Coachlink Monitor #SM99251 only gets power when the brake light switch of the tow vehicle is activated. If you spliced into the incorrect wire or used…

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Answer 5

Yes we run into this all the time. Roadmaster has a great solution with the Adapter for Jeep D-Ring Bumper Mounts to Roadmaster Motor Home Mount Tow Bars part #RM-035-1 for 1" thick d-rings or part #RM-035 for 3/4" d-rings. Basically these…

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Answer 6

You can see in the attached videos that the green wire of the Roadmaster Brake-Lite Relay Kit for Towed Vehicles #RM-88400 gets connected to the white wire closest to the switch on your 2016 Jeep Wrangler while the black wire gets connected farther…

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Answer 7

We had the chance to install the SMI DUO part #SM99251 on a very similar 2017 Jeep Wrangler to what you have and we mounted the larger module underneath the seat and then the smaller switch on the kick panel. If you check out the install video link I…

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Answer 8

Good question; so the issue with your 2019 Jeep Grand Cherokee is that it doesn't technically have a traditional stop light switch, which is why you are having trouble getting 12 volts. The good news is the Stay-IN-Play DUO Supplemental Braking…

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Answer 9

If you need a stop light switch to flat tow with a supplemental braking system, you're looking for the Roadmaster Stop Light Switch Kit #RM-751497. This will transmit a signal to your coach's brake monitoring system so that you know that your…

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Answer 10

You are needing the Roadmaster Stop Light Switch Kit #RM-751497 to go with the Demco SBS Reinstall Kit for Stay-IN-Play DUO Supplemental Braking System #SM6270 for your 2020 Jeep Gladiator.

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Answer 11

When using any supplemental braking system on any vehicle, I recommend adding a charge line to the vehicle being towed. The Roadmaster Battery Charge Line Kit for Towed Vehicles #RM-156-25 is easy to install and simply gives that additional peace of…

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Answer 12

I do have a better option for you but the Tekonsha Two Stage 12 V DC Battery Charger part #2024-07 is mainly used to charge a breakaway systems battery which is much smaller than the 12 volt battery you have on your toad. A better option for you…

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