Troubleshooting Trailer Turn Signal Fuse that Blows When Replaced

Question

Question:

Read reply from Adam r to Kenny very helpful in that I found my number 16 40 amp fuse blown in the power distribution box but when I replaced it it blew again... Ugh.. Why would that fuse keep blowing 1997 f150 trailer turn signals

asked by: Jason J

0

Expert Reply:

Did it blow immediately after replacing it or did it blow after connecting a trailer?

Either way the problem is a short to ground that is causing the fuse to blow and you'll have to find it and fix as needed. If the fuse blows without a trailer the problem is on the vehicle side of the wiring, if it blows after connecting the trailer then you'll need to find the short on the trailer's wiring and fix as needed.

Common causes for shorts are cut or exposed wiring touching bare metal or excessive corrosion on the pins of a connector.

expert reply by: Jameson C

0

Answer 1

A Grade 5 bolt or higher would be recommended for use with the CE Smith Tie-Down Bracket #CE26214G.

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Answer 2

We have the etrailer Ratchet Strap with Snap Hooks #e54BR which is 10' versus the Strap #e34BR you found which is 20'. Both of these have a 10,000lb break strength. If you are needing longer than 10' you can always cut the 20' strap…

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Answer 3

This sounds like a ground problem on the right side. The turn signal not working makes sense because with the brake lights, there is a constant signal coming through which is enough to make the lights illuminate on both sides like they should. But…

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Answer 4

It sounds like there is a short somewhere along the wiring of your vehicle or trailer that is causing a fuse to blow every time you connect. The first thing I recommend doing is disconnecting the trailer and using a circuit tester like #PTW2993 to…

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Answer 5

Did you have a 4-pin connector that had 5 wires or was it a 5-pin connector? There is a big difference since you normally see a 5-pin connector on a boat trailer with the 5th pin used for an electric reverse lockout solenoid on a brake actuating…

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Answer 6

There are two types of 5-wire flat trailer wiring harnesses; the wishbone style of 4-pole such as #A35W42B which has 4 pins but that has two separate wires connected to the the running light pin so that you have one wire for each side of the trailer;…

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Answer 7

The Hopkins Endurance Easy-Pull Harness w/ 4-Pole Flat Connector #HM38134 you referenced has 18 gauge wires for the brown (taillight), green (right turn and brake), and yellow (left turn and brake) wires. The white (ground) is a 16 gauge wire.…

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Answer 8

The difference between the Class II and Class III hitches has to do with their Gross Trailer Weight (GTW), their Tongue Weight (TW), and their Hitch Receiver Size. Class II trailer hitch receivers have a 1-1/4 inch receiver and can be rated up to…

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Answer 9

In order to determine the torque rating for the lug nuts on your trailer you will need to know check out the chart I attached that shows all of the torque specs for all the trailer lugs available based on stud size, wheel material and wheel size.

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Answer 10

A 4-Way trailer connector has the basic lighting functions only; running lights, left turn signal and brake lights, right turn signal and brake lights, and ground. A 7-Way has these functions and a 12 volt circuit, a circuit for electric trailer…

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Answer 11

Yes, it will work. You'll just need to cut the Lance 6-pin connector out and rewire it into the etrailer Trailer Wiring 7-Way Upgrade Kit w/ Junction Box and RV Style Connector item #e99011. Here are the individual functions of that Lance 6-pin:…

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Answer 12

Hey Jonathon thank you so much for all of that additional information! To haul your bikes behind your class C Sprinter motorhome, while flat towing your Mini, I recommend the Hollywood Racks RV Rider Bike Rack item #HLY64FR and the Roadmaster Dual…

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Troubleshooting Trailer Turn Signal Fuse that Blows When Replaced

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