Expert Answers about Kenworth Tow Bar Wiring

• Troubleshooting the Brake Lights Not Coming on in my Flat Towed Vehicle
• It sounds like you are more likely having and issue with your tow bar wiring rather than the Demco SBS Air Force One Supplemental Braking System # SM99243. You can test this by testing your Air Force One system. Depress the break and verify that the LED indicator light is coming on and that the actuator is pulling the brake pedal in your towed vehicle. If that is happening, then the Air Force One is working properly. The Air Force One is not what provides power to illuminate your brake...
  view full answer...


• Parts Needed to Flat Tow 2017 Jeep Grand Cherokee Limited Behind RV
• The first thing you need to flat tow your 2017 Jeep Grand Cherokee Limited is a base plate kit like the Roadmaster part # RM-521440-5 which is a confirmed fit. I attached an install video for this for you to check out too. In addition to the base plates, you will also need a compatible tow bar, safety cables, lighting, and supplemental braking to flat tow your vehicle. The most popular compatible tow bar is the Falcon All Terrain, # RM-522. This has non-binding arms which makes the setup...
  view full answer...


• Troubleshoot Vehicle Taillights Not Working with Tow Bar Diode Kit Installed When Plugged into RV
• When you plug the tow bar wiring # 154-792-118158 into your tow vehicle the diodes of the kit will prevent the Jeep from having control of them if the signal from the tow vehicle is being applied. This is a function of the diodes designed to prevent the circuit from backfeeding onto the vehicle's wiring circuits. If they are not working at all with the tow vehicle plugged in you will want to first verify that all the connections you made are secure. After that use a circuit tester to test...
  view full answer...


• Parts Needed to Flat Tow 2017 Ford C-Max
• Since you have a Roadmaster tow bar the correct base plate kit for your 2017 Ford C-Max is the part # 524432-1. This is what attaches to your vehicle frame to provide the attachment for your tow bar. For lighting/safety cables, locks, and covers for the tow bar we have the Roadmaster Falcon All Terrain kit part # RM-9243-1 which comes with all of that as one part number. The diode kit that comes with this allows you to splice into the taillight wiring so that your RV controls the vehicle...
  view full answer...


• Troubleshooting Tow Bar Wiring, Toad Vehicle Left Turn/Stop Not Functioning
• It sounds like the problem is the ground of the left stop/turn light you have on your RV. If this circuit has a weak ground or signal it will prevent the toad's taillight from functioning as well. Check the circuit on your tow vehicle for a weak ground or possible shorts and fix as necessary. Once you get the tow vehicle's taillights working again the toad vehicle's should work again. Check all connections between the tow bar lighting and the factory taillight circuits on the tow vehicle...
  view full answer...


• While Installing Light Bar Connector Arced and Light Bar Will Not Come On
• It is possible that a fuse is blown. Use the trucks owners manual to find the fuses related to the tow package wiring since it sounds like that might have been what you were plugging or splicing into. There is likely a fuse and/or relay or more than one related to the tow package circuits that you can check. Or if you have a meter or circuit tester such as # PTW2993 you can test the connector or wires you were tapping into while someone sits in the truck and runs through the lighting functions....
  view full answer...


• What Does the Low Voltage Message Mean on the Even Brake and How to Fix It
• The low voltage message on the handheld part of the Even Brake # RM-9400 indicates that the battery in the towed vehicle has an insufficient charge to power the unit in the towed vehicle. The battery will need to be charged, or replaced if there is something wrong with it, in order for the Even Brake to function. An auto parts store can test the vehicle battery for you to see if it needs to be replaced or just charged. If it just needs a charge you can use an AC powered charger such as...
  view full answer...


• Reverse Lights Flash when Left Turn Signal is On Using Hopkins Tow Bar Wiring on 2015 Jeep Wrangler
• This is the first time I have heard of this issue with any Hopkins tow bar wiring harness such as # HM56200 on a 2015 Jeep Wrangler Unlimited. Since this harness plugs in line with the tail light wiring there isn't a way that it could have been connected in the wrong spot. It is possible though that there is a bent pin or maybe corrosion that is causing a short to jump to the reverse light on that one side. That is the first thing I would check. Another thing that might cause the harness...
  view full answer...


• No Running Lights on Toad Vehicle but All Other Lights Work
• The tow bar does not need to be attached to the motorhome/toad in order for the lights to work, just the wiring harness. In order to see if the trailer connector is bad on the motorhome you will need a circuit tester. Once you obtain the circuit tester you will then want to test the running light pin on the motorhome's 7-way. If no power is present when the circuit is active then you will want to test the wire just before the trailer connector and see if it has power. If you have power...
  view full answer...


• Troubleshooting Motorhome and Ford Ranger Lights Not Functioning Properly
• When you test the Ford Ranger wiring are you testing the functions as if you are driving the Ranger or by applying 12V power to the plug that connects to the motorhome? A lot of the tow vehicle wiring kits have a bypass feature that allows you to still drive and use the lights as normal even if the wiring from the motorhome isn't functioning properly. Try to isolate where exactly the signal is lost and check any and all connections between the two. This includes connections for the tow...
  view full answer...


• How to Fix Death Wobble While Flat Towing a 2018 Ford Edge
• The Jeep fix won't work for Ford because they are different manufacturers. I did some research and it looks like you can contact your local Ford dealership for a wiring kit, or another solution I saw people talking about is using bungee cords and wrapping them around the steering wheel and your driver's seat frame to keep the steering wheel taut to help prevent that death wobble. For a complete flat towing setup you will need a base plate kit, tow bar, safety cables, vehicle tow bar wiring,...
  view full answer...


• Will Supplemental Braking System and Tow Bar Wiring from Motorhome Overload Brake Lights on Enclave
• You may need a brake light relay # RM-88400 to keep the Buick Enclave brake signal from overriding the turn signal sent by your motorhome. The relay is needed on towed cars with combined lighting if you are using a supplemental braking system. Combined lighting means the vehicle has turn signals and brake lights on the same circuit. To determine if a brake light relay is needed to properly wire your vehicle to be towed, answer the following questions. Are you using a supplemental braking...
  view full answer...


• Does The Battery Need To Be Disconnected To Flat Tow A 2022 Lincoln Nautilus
• Typically the requirement to disconnect the battery is from the manufacturer but I looked through the owner's manual for both the 2021 and 2022 models and they don't list anything about disconnecting it under the recreational vehicle towing section. Roadmaster, one of our suppliers, does has a note saying that the battery should be disconnected with part # RM-766 to flat tow and that there could possibly be more than one battery in the vehicle that will need to be disconnected. I've never...
  view full answer...


• Troubleshooting Brake Lights Not Working When Flat Towing 2018 Nissan Frontier
• The Blue Ox Patriot Supplemental Braking System # BLU37TR is a great system that will power the brakes in your Nissan Frontier at the same time and with the same intensity that you apply to them in your RV. This system will not, however, power the brake lights on the vehicle. To allow your Frontier to accept the tail light functions from the RV, you will need to install tow bar wiring. If you have not already done this, I recommend the Roadmaster Diode Flexo-Wiring Kit # RM-15267. This...
  view full answer...


• Should Battery be Disconnected for Flat Towing a 2013 Lincoln MKX
• According to page 152 of the owner's manual for your 2013 Lincoln MKX by putting the vehicle in accessory mode it allows some electrical accessories to still operate even though the engine isn't running. I'm not sure what needs to keep running but since the manual doesn't say anything about disconnecting the battery I don't advise doing so as it would essentially be the same as turning your vehicle off. What I do recommend doing is using the Flexo-Coil Wiring Kit # RM-15267 alongside the...
  view full answer...


• InvisiBrake Activates with RV Exhaust Brake and Runs Down 2015 Jeep Wrangler Battery
• If the exhaust brake makes the brake lights/tow package trailer connector on the RV come on then it will trigger the InvisiBrake # RM-8700. There is a solution but there isn't an easy way to bypass the exhaust brake from setting off the InvisiBrake. What you can do is add a charge line from the RV to the battery on your 2015 Jeep Wrangler. This will require a couple of additional parts. To keep a maintenance charge on the battery I recommend using a harness such as # BX88206 with the...
  view full answer...


• Turn Signal Causes Supplemental Braking System to Apply Brakes on Towed 2004 Honda CRV
• Sounds like you are going to need a Vehicle to Vehicle Tail Light Converter like # 118158. This converter is used when a motorhome with a 2-wire system is towing another vehicle with a 3-wire system, by way of a tow bar. If your supplemental braking system is spliced into the right turn signal (for example) then you will take the converter's green wire and splice it into the right turn signal wiring and run the red wire to the supplemental braking system.
  view full answer...


• Troubleshooting A Putco Light Bar That Isn't Lighting Up
• I would start by checking your power source for the Putco Red Blade LED Tailgate Light Bar # P92010-60 as well as the inline fuse for it. There should be a fuse holder on the light bar's wiring that you can check and then I would test the truck's connector with a tester # PTW2993 with each light function to see if a fuse blew on the truck and is no longer sending power back to the light bar.
  view full answer...


• Troubleshooting Non-Functioning For Tow Lights on a 2007 Honda CR-V Behind a Motor Home
• Without seeing how everything is wired, it is a bit hard to diagnose, but I am guessing you have 1 too many wires run to the Brite-Lite Converter. The ground that is on part # RM-732 should be grounded to the motor home frame or structure. The GND wire that was on the motor home needs to be connected to the ground wire on the CR-V tow light wiring. The CR-V needs an electrical ground, since it is not running and creating a ground it needs to have a ground wire run to the motorhome. The...
  view full answer...


• Tow Bar Lighting Solution for 2019 Ford Ranger that Doesn't Require Brake Light Relay
• Since your 2019 Ford Ranger has a separate turn signal from brake light signal the diode kit that would work the best is a tow bar lighting kit for separate turn signals like you mentioned like the Roadmaster part # 154-792-118158. This will allow your brake lights and turn signals to function properly without requiring you to also use a brake light relay.
  view full answer...