Tips for Routing a Trailer Wiring Harness through the Firewall on a 2017 Toyota RAV4
Question:
I decided I would rather run my hot wire down through the inside of my 2017 Rav4. Since I had back panel off , it was easier to run under doorsills to firewall. Your directions and videos were excellent. My only question is, where do you recommend I that I go through firewall at? Should I drill a hole for a grommet or is there a better access to the battery?
asked by: Jack L
Expert Reply:
If there is already a harness that goes through the firewall and that is easy to get to/work with then you can use that though it may require some persuasion to get the wire through. Otherwise drilling a small hole, running the wire through, and then sealing up the hole with silicone is the way to go. Just be careful not to drill through anything on the other side of the firewall!
What I recommend is to drill a hole a little smaller than 9/16 and then put grommet # SWC8055 in the hole. This will protect the wire from the sharp metal of the hole. Then seal it up after running the wire through.
Products Referenced in This Question
Snap Bushing Grommet - 7/16" ID, 9/16" OD
- Wiring
- Wiring Protection
- Bushing Grommet
- 7/16 Inch Diameter
- Spectro
more information >
Product Page this Question was Asked From
etrailer Trailer Hitch Receiver - Custom Fit - Matte Black Finish - Class III - 2"
- Trailer Hitch
- Custom Fit Hitch
- Class III
- 525 lbs TW
- 3500 lbs GTW
- 4000 lbs WD GTW
- 2 Inch Hitch
- 525 lbs WD TW
- Visible Cross Tube
- etrailer
more information >
Featured Help Information
Instructions
Miscellaneous Media
Continue Researching
- Search Results: tools
- Shop: Air Filter
- Article: Brake Controller 7- and 4-Way Installation Kit (ETBC7)
- Shop: Brake Controller
- Shop: Trailer Wiring
- Shop: Universal Installation Kit for Trailer Brake Controller - 7-Way RV and 4-Way Flat - 10 Gauge Wires
- Shop: Powerbuilt Trim Pad Remover
- Q&A: How to Run the Power Wire for Trailer Wiring on a 2020 Toyota Rav 4
- Article: Routing the Power Wire for a Trailer Wiring Harness
- Shop: Universal Wiring Harness for Redarc Tow-Pro Trailer Brake Controllers
- Search Results: tow pro universal mount
- Video: etrailer Trailer Brake Controller Universal Kit Installation - 2011 Toyota RAV4
- Video: Choosing the Right Brake Controller
- Article: Brake Controller Installation: Starting from Scratch
- Article: Trailer Wiring Diagrams
- Article: Towing a Trailer? Let's Talk About Brake Controllers
- Shop: Replacement End Cap for T2 Bike Carriers
- Shop: etrailer Hitch Pin Alignment Collar for Hitch Accessories - 2" Hitches
- Shop: Redarc Tow-Pro Liberty Brake Controller w/ Universal Wiring Harness - Dash Knob - Proportional
- Shop: Redarc Tow-Pro Liberty Brake Controller - Dash Knob - 1 to 2 Axles - Proportional
- Video: Curt Wiring - Tools for Wiring - I26 Review
- Video: Redarc Tow-Pro Trailer Brake Controller Control Knob Universal Mounting Panel Review
- Q&A: What is the Difference Between a Class II and a Class III Hitch?
- Search Results: hitch
- Video: Choosing the Right Trailer Wiring
- Shop: Trailer Hitch
- Q&A: What is the Difference Between a 4-Way and 7-Way Trailer Connector
- Search Results: trailer hitch
- Q&A: Lug Nut Torque Chart for Trailer Wheels
- Search Results: trailer brake controller
on Trailer Hitch
