See what our Experts say about this Optronics Custom Fit Vehicle Wiring

• Adding Electric Lockout and 5-Way to Trailer with Titan Model 60 Actuator
  To add an electric lockout to your Titan Model 60 actuator only requires the part # T4748800 and then if you wanted to add a shroud to protect the lock out you'd also need the part # T4835800183. To activate the electric lock out you need a reverse light circuit carried to it. Typically a 5-way is needed for this to carry the extra circuit. For a 5-way you'd then want the part # A40W5B which you can replace your 4-way with. For a 7-way to a 5-way adapter then you'd want the part # A75TB...
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• Old Trailer Wiring 5-Way had 6 Wires But New 5-Way Has 5 Wires
  The trailer connector that you had is what is called a wishbone harness. It has 2 running light wires so you do not have to run a jumper wire for running lights from one side of the trailer to the other. Harness # A40W5B is an example of a wishbone 5-Way. All you have to do is connect the 2 running light wires from the trailer wiring together and then to the brown wire on the new harness. Or, if you are replacing all the wiring, you would run a jumper wire from one side of the trailer...
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• Light Kit for Boat Trailer
  Hi Roy; that gooseneck kit is designed to replace the traditional lights on gooseneck trailers. Although you can make it work, I don't think the size of all of the lights, or all of the lights in general will be correct/necessary. The marker lights look like they're overkill, and no tail lights are included. It also has a breakaway kit which is for electric or EOH setups. Your surge brakes now should have a breakaway cable that is part of the actuator. A 7-way like can be used in place...
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• Replacement 5-Way Trailer Wiring for Boat Trailer
  For new 5-way wiring what you'll need is the part # A40W5B. This will handle all of the wiring that runs from the connector back to the lighting assemblies as well as for a reverse lock out solenoid. Surge brakes don't always require wiring as they don't always have reverse lock out solenoids. It's very possible yours does not have one so wiring may not be needed. If you see a solenoid at the back of the actuator on the brake line you will want to run the blue wire of the 5-way to it. I...
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• 8 Wire Boat Trailer Wiring to 5-Way Plug on Truck
  There is not going to be a 5 flat that has 8 wires; the functions of the 8 wires are likely ground, running light circuit (split into 2 wires at the plug), left turn, right turn, brake lights (possibly split at the plug), and output to reverse lockout. What you will need to do is use a circuit tester such as # PTW2993 to determine the functions of the wires and wire them to 5-flat # A40W5B in the traditional manner of a 5-way which is ground, running lights, left turn/brake, right turn/brake...
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• Replacing 5-Way Trailer Harness That Has 7 Wires
  When a 4-Way or 5-Way pin wiring harness for a trailer has more wires than pins, like the Optronics # A40W5B, it just means that the manufacturer is trying to make it easier on the installer. In your case it sounds like your trailer has 2 ground wires and 2 running light wires that run down either side of the trailer. If this is the case then all you have to do is splice the browns together and the whites together with your new harness and everything should work great! I have attached...
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• Recommendation to Replace Trailer 5-Way That Has 9 Wires
  It sounds like the current 5-Way connector on your trailer has a type of wishbone wiring design, which uses separate wires for the signal lights on both sides of the trailer. Most likely yours has a separate wire going down each side of the trailer for the running lights, brake lights, and reverse light functions. I highly recommend following the wiring from the connector on your trailer and testing them for function to verify this. We do not have any 5-Way connectors available with a...
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• What Does Some Trailer Wiring Have 2 Brown Tail Light Wires
  Common 4-pole trailer wiring like # HM38138 uses one wire, the brown one, for the running lights on both sides of the trailer. Sometimes what is called a 'wishbone' harness is installed on the trailer and this simply uses two separate running light wires - brown with yellow for left and brown with green for right - to make it easier to connect to the trailer lights since that way no jumper wire will be needed to cross from one side to the other. Some examples of wishbone style 4-pole...
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• What Wire Does The Yellow Wire With Brown Stripe On My Trailer Connect To
  On the trailer's 5-way connector the yellow wire with brown stripe is most likely a running light circuit but you want to be sure. There is sometimes a yellow/brown wire which is ran down the left side of the trailer for tail lights and a green/brown wire which is ran down the right side of the trailer for tail lights. Since wire color functions may vary depending on the manufacturer you still want to test the wire to determine the function by using a vehicle battery and jumper wire on...
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• Wishbone Trailer Wiring Harness for a Magic Tilt Boat Trailer
  I believe you have what is referred to as a wishbone wiring harness. A wishbone wiring harness has 6 wires and is the same as a 4-way for the exception that it has both running light wires ran to the trailer connectors as opposed to splicing them together and then running them to the trailer connector. The functions should be as follows: Green - Right Turn/Brake Yellow - Left Turn/Brake Yellow/Brown - Left Running Light Green/Brown - Right Running Light White - Ground Red - Reverse Lockout...
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• How To Re-Wire Your Boat Trailer's 5 Way Wiring And Install New LED Lights
  I recommend using 40 Ft 5-Way Trailer Wiring Harness # A40W5B, which is a kit that will replace your entire 5 way boat wiring setup and give you the 5 way connection at the front of the trailer. The lighting wires are 40 feet long, which will be more than enough. It comes with a 30" ground wire (white) that will be connected to the frame of your trailer. The blue wire is 60" and will be connected to your brake solenoid if you have one; your trailer may not require this, as it may use a...
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• Wiring Guide for Installing Lights on Trailer with 5 Wires
  A trailer can have either 4-pole or 5-pole connectors and the number of actual wires can vary too. For instance, the part you referenced # 16-4B-1, is 4-pole wiring like what is included in a part like # W787274 which is a trailer-side 4-pole setup that carries stop, turn and tail light signals. There are also 5-pole connectors like # HM47910 that add one additional circuit that can be used for trailer brakes or another function. Then there are also wishbone style harnesses that have...
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• Wiring a 5 Flat That Has 8 Wires
  There is not going to be a 5 flat that has 8 wires; the functions of the 8 wires are likely ground, running light circuit (split into 2 wires at the plug), left turn, right turn, brake lights (possibly split at the plug), and output to reverse lockout. What you will need to do is use a circuit tester such as # PTW2993 to determine the functions of the wires and wire them to 5 flat # A40W5B in the traditional manner of a 5-way which is ground, running lights, left turn/brake, right turn/brake...
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• Parts Needed for Towing a Boat Trailer with a 2016 Mercedes-Benz GLE 350
  The Curt Trailer Hitch Receiver # C13294 is a great choice for your 2016 Mercedes-Benz GLE 350. The receiver has a 2" square opening and is rated for up to 750lbs of tongue weight and a trailer weight up to 7,500lbs. Be sure to not exceed any weight ratings given from Mercedes on your GLE. Instead of using the Curt 4-Way # C59496 I recommend using the Tekonsha 5-Way Flat # 119177KIT. This kit allows you to draw power from the vehicle battery for the tail lights and reverse lights unlike...
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• Trailer Wiring Connector for Triton 8x10 Aluminum Snowmobile Trailer
  For your wiring, you will need to test your wire functions to know which one connects where. I recommend using a 12v battery and simply connecting the negative terminal to the trailer frame and then connecting the power to each wire at the connector individually to determine function. It is not uncommon to have two wires running to one function location for each side of the trailer so there aren't any jumper wires across the frame needed from side to side. I've attached an article...
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• Replacement 5-Way Flat Wiring for 2005 Four Winns Trailer
  I recommend using the 5-Pole Flat Connector # A40W5Bto rewire your 2005 Four Winns trailer. This is a wishbone style so you can easily route the wiring to each side of your trailer. The regular lighting harness is 40' long while the ground wire is 4' long and the blue wire for the reverse light function is 5' long.
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• What Length Wiring Harness Is Needed For a Boat Trailer Measuring 22-1/2' From Tail Light To Tongue?
  With having 22'6" from your tail light location to the tongue on your trailer I recommend going with at least a 30' wiring harness. The additional length is needed so you will be able to route your wiring on the frame to the lights and to have enough to connect to the tow vehicle. We do have a 30', 4-Way Flat Harness # W002230 or a 40', 5-Way Harness # A40W5B depending if your boat trailer has a surge brake coupler with electric lockout. I recommend having 2' of wiring past the tongue so...
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• Where Does Blue Wire of Trailer Wiring 5-Way Normally Run to on Trailer
  So the blue wire of the 5-ways like the # A40W5B normally runs to the reverse lockout solenoid of a surge brake actuator like what you described having. The blue wire on the vehicle side of the wiring runs to the reverse light circuit. This allows the solenoid to have voltage when the vehicle is put in reverse preventing the brakes from applying. This runs right to the back of the actuator on the trailer coupler which is why you don't see the wiring ran to the back of the trailer.
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• Is Tinned Wiring Used In Trailer Wiring Kits
  The trailer wiring we offer like part # A40W5B, is designed to be used as a 5-wire harness, and works well with a trailer that has a surge coupler. The wires used in this harness are 16 gauge except the blue brake wire which is 18 gauge, and designed to be able to safely handle the current from a 12 volt system. The wires in this harness are not tinned. From my research I found that tinned wire is normally used in industrial wiring and used when the operating temperature of the wire is...
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• How to Wire Up a Boat Trailer with a Reverse Light on a Vehicle with a 4-Way Connector
  I have a solution for you, but electricity and water do not mix well so you will want to unplug the trailer wiring harness before you submerge the trailer in the water. The best setup I can recommend that will accomplish your needs and will still allow your wife's vehicle with a 4-way to connect to the trailer would be a 5-way setup. To convert the 4-way on your Jeep to a 5-way all you will need is the # 20036. Basically this will plug into the 4-way of your Jeep and the extra wire will...
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• Replacement Trailer Wiring Harness For a Boat Trailer Using a 5-Way Flat Connector
  Currently the only wiring harnesses we have with a 5-way flat connector are like the 25 Ft 5-Way Trailer Wiring Harness # A25W5B and 40 FT Harness # A40W5B. These harnesses use 6 wires coming from the connector. It has a short 5' blue wire to run to the surge brake electric lockout, a short 30" ground wire to attach to the trailer frame, 2 brown wires for the running lights on either side of the trailer, a green wire for the passenger brake/turn signal and a yellow wire for the drivers...
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• 5-Way Wiring Harness for Boat Trailer
  A wishbone harness means that there are separate wires for the running light circuits - one for each side of the trailer. For a 5-flat trailer end connector for your Ranger boat trailer, a great choice would be the 5-Flat Connector # A40W5B.
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• Replacement Trailer Side Wiring Harness for a 1996 Yacht Club PWC Trailer
  Trailer side wiring harnesses are not specific to the trailer so you can use any one that has the proper connector and length for your 1996 Yacht Club PWC trailer. I have included a link to the trailer side harnesses for you. If your trailer has a 4-Way flat connector a popular option is wishbone harness # A35W42B. A wishbone harness has 2 wires connected to the running light pin so you won't have to run jumper wires from one side of the trailer to the other for running lights. If your...
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• Troubleshooting Trailer Wiring with Brittle Ground Wire That Keeps Breaking
  If the wire is that fragile, I recommend replacing it now. If you can find a part of the wire to splice into then you can absolutely do that, but if it is too fragile then it won't provide a good ground and the other wires in that harness are likely made of the same material. If you can find a solid point of the wiring you can splice in # 16-1-1 with butt connector # 05731-5 and ring terminal # DW05737-1. I recommend the 35 Ft 4-Way Trailer Wiring Harness - Wishbone Style - 42" Ground...
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