40 Ft 5-Way Trailer Wiring Harness - Wishbone Style - 30" Ground - 5' Auxiliary Wire

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• Does The Wesbar 5-Pole Flat Connector W002290 Use Copper Wire Or Copper Clad Wire
  The Wesbar 5-Pole Flat Connector W002290 (along with virtually every other wiring harness we sell) uses full copper wire. Unfortunately the Wesbar W002290 is no longer available. We now offer the Optronics # A40W5B which is a similar 5-flat harness that also uses full copper wire.
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• Why Does Wishbone Trailer Wiring Harness A40W5B Have Extra Brown Wire
  I could not find etrailer order history for you based on either your last name or your email address so I do not know which vehicle wiring harness you have. The linked page shows the 4-pole trailer wiring kits we offer for your 2008 Nissan Sentra. This is the only type of wiring kit we have for this vehicle. Some trailer wiring kits will use dual running light wires to avoid the need to splice and run that circuit's wire across the sides of the trailer. These are called wishbone harnesses...
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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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• 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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• Available 5-Flat Wishbone-Type Trailer Connectors
  We do not carry (and I have not seen) a 5-flat type trailer connector with the many multiple wires for each pin that you describe. We DO have wishbone 5-flat connectors like # A40W5B which have two brown running light wires to simplify connection to the tail lights on both sides of a trailer. What you describe sounds like a custom-made part. I can understand the three white (ground) wires especially if the trailer were made of aluminum which makes establishing multiple grounds more challenging...
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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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• Is There Tinned 4-Way Wiring Available for Boat Trailer Wiring
  While tinned wiring is the norm when it comes to interior wiring on boats, boat trailers see a minimal amount of water compared to the actual boats so it's not the norm for the trailer wiring. They do use a tin coating on the pins that are the parts of a wiring harness like the 5-Pole Flat Connector # A40W5B since those are most exposed to moisture, but since the actual wiring is rarely exposed to water I'm guessing that's why they don't go the extra mile when it comes to using that wiring...
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• Can the Wesbar 5-Pole Flat Connector be Used on a Reverse Circuit
  Yes, you are correct in that the blue wire on the Wesbar 5-Pole Flat Connector part # A40W5B can be used for the reverse light circuit. I have listed for you below the way I recommend wiring the connector. Yellow: Left Turn/Stop Green: Right Turn/Stop Brown: Tail Blue: Reverse White: Ground Please note that however you wire the trailer side connector, the vehicle side connector will need to match it in order for the lights to function properly.
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• Trailer Wiring Harness With Tinned Wire
  While tinned wiring is the norm when it comes to interior wiring on boats, boat trailers see a minimal amount of water compared to the actual boats. They do use a tin coating on the pins that are the parts of a wiring harness like the Wesbar 5-Pole Flat Connector # A40W5B since those are most exposed to moisture, but since the actual wiring is rarely exposed to water I'm guessing that's why they don't go the extra mile when it comes to using that wiring within the harnesses. As far as...
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• Wire Gauge Size of the 40 Ft 5-Way Trailer Wiring Harness A40W5B
  The 40 Ft 5-Way Trailer Wiring Harness part # A40W5B uses 20 gauge wire according to Optronics. This is pretty standard and will work for the vast majority of trailers without issue.
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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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• 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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• Determining Wiring Functions On Trailer To Install New 4-way Connector
  Typically there is a white, green, brown, Yellow/Green and brown, and a yellow wire so since you do not have a dedicated yellow wire you will need to test wire functions by using connecting the brown, green, yellow/brown, and green brown one at a time to the positive terminal of a battery while grounding the white wire and seeing which functions come on with each wire. Since the colors on your old connector are not standard you will need to make the connections by function and not the color...
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• 5-Way Recommendation For Trailer that Was Converted to Disc Surge Brakes
  What you would want is the part # A40W5B which is a trailer side 5-way flat with 40 inches of wiring. 5-Way rounds aren't common for trailer towing so that wouldn't be your best option. What you'd then want to do is cut all of the wires but the blue to length so that you can wire the 4 wires of the 5-way to your current wiring near the coupler, and then leave the blue wire longer so that it can make it to your reverse lockout solenoid.
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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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• How to Replace a 5 Pole Flat Wiring Harness That Has 7 Wires
  I have a solution for you, but we do not have the exact replacement for this wiring harness. Instead, I recommend using the 5-Pole Flat Connector # A40W5B to replace your old connector and then combine one of the wiring functions on the old harness into one wire on the new harness. You'll want to test the functions of your existing wires but my best guess is that the way this is currently wired your blinkers have individual ground wires and that harness has no reverse light wired in- these...
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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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• Replacing 5-Way on Trailer that Used 8 Wires
  The # A40W5B would be a really great choice although it only has 5 wires ran to it. You'd just need to combine all of the similar wire colors to the single circuit of the new 5-way. The brown and brown/green would go to just the brown of the new 5-way.
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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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• 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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• 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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• 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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• 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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• Why Wont Reverse Lights of 1990 Coleman Chesapeake Camper with 4-Way Connector Work
  The first issue you mentioned of the reverse lights not working is because your trailer has a 4-way connector which does not carry the reverse light circuit. So to solve that problem you'll have to replace the 4-way of your trailer with a 5-way like the part # A40W5B which the blue circuit would run to the power wire of the reverse lights. If your tow vehicle only has a 4-way as well it would need to be converted to a 5-way with the part # 20036 and you'd be set. The 5th wire of this...
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