Does Battery Need to be Disconnected to Install Tow Ready Trailer Wiring on a 2015 Toyota RAV4
Published 07/26/2016
Question:
Is it necessary to disconnect the battery to install this wire harness? If so, will this have any effect on the car electrical system?
asked by: Dan G
Expert Reply:
Step 11 of the trailer wiring harness part # 118578 that you referenced indicates that you have to disconnect the negative post of your vehicle's battery temporarily. You would lose some radio presets doing this but nothing permanent would get damaged. On the other hand, if you were to leave the battery connected there is a chance you COULD damage the electric system or get shocked yourself.
I attached an install video for you to check out as well.
Product Page this Question was Asked From
T-One 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
- Tekonsha
more information >
Featured Help Information
Instructions
Miscellaneous Media
Continue Researching
- Shop: Trailer Hitch
- Shop: Trailer Wiring
- Q&A: Should Vehicle Battery Be Disconnected Before Installing Curt Wiring Harness C56208
- Video: An In-Depth Look at the Curt Easy Mount Bracket for 4- or 5-Way Flat Trailer Connector
- Video: Let’s Check Out the No-Drill Mount Bracket, Long
- Shop: T-One Vehicle Wiring Harness for Factory Tow Package - 4-Pole Flat Trailer Connector
- Shop: Curt Easy Mount Bracket for 4- or 5-Way Flat Trailer Connector - 2" Hitch
- Shop: Curt No-Drill Bracket for 4-, 5-, or 6-Way Trailer Connector Mounting Brackets - Short
- Shop: Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector
- Shop: No-Drill Mount for Electrical Mounting Bracket - Short
- Shop: Brophy Mounting Bracket for 4-Pole Flat Trailer Connector
- Shop: Bauer Products 4-Way Trailer Plug Holder
- Shop: Salt Spreader
- Article: Routing the Power Wire for a Trailer Wiring Harness
- Q&A: Recommendation for Hidden Trailer Hitch on 2018 Toyota RAV4
- Q&A: Will Installation of Oris Hitch on 2019 Volvo XC90 T6 Require Trimming/Interfere With Kick Sensor
- Q&A: Recommended Trailer Hitch And Trailer Wiring For 2017 Toyota RAV4
- Q&A: Does the Oris AK41 Hitch Block the Foot Sensor on a 2021 Volvo XC90?
- Q&A: Hidden Hitch that Fits 2019 Toyota RAV4 Hybrid
- Q&A: Trailer Hitch Compatible with Hands Free Liftgate on 2018 Toyota RAV4
- Article: My Trailer Hitch Doesn't Fit
- Article: Brake Controller 7- and 4-Way Installation Kit (ETBC7)
- Article: How to Measure for Trailer Hitch Drop
- Article: Trailer Wiring Diagrams
- Article: Parts Needed to Add Electric Drum Brakes to a Trailer
- Article: Troubleshooting 4 and 5-Way Wiring Installations