Can a 30 Amp Fuse be Used Instead of a 10 Amp on Curt Wiring Harness for 2017 Toyota Highlander
Updated 10/18/2017 | Published 10/17/2017
Question:
This Curt wiring harness comes with 10A fuses, which at 12V would supply 120 watts to the trailer. I noticed that the Toyota factory harness supplies a 30A fuse which supplies 360 watts. Can 30A fuses be used with the Curt harness to provide more electricity to the trailer?
asked by: Mike S
Expert Reply:
What you are likely seeing for the 30 amp circuit is for the 12 volt hot lead for a 7-Way trailer connector. The 10 amp fuse for Curt trailer wiring harness # C56217 applies only to the trailer lights and no other functions. Most OEM systems use a 30 amp circuit for the 12 volt hot lead in a 7-Way but the ratings for the circuits related to the lights will be much lower.
You would not use a higher rated fuse with the Curt harness because it would allow a short to overdraw the converter and blow it instead of the fuse.
Product Page this Question was Asked From
Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector
- Custom Fit Vehicle Wiring
- Trailer Hitch Wiring
- Vehicle End Connector
- Powered Converter
- No Tow Package
- 4 Flat
- Plug and Lead
- Plug-In
- Hidden
- CURT
more information >
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