Review on 🚙 Enhance Your Toyota Sienna's Towing Capability with CURT 55580 Vehicle-Side Custom 4-Pin Trailer Wiring Harness by Adam Martin

. I wanted to install a wire harness on my 2005 Toyota Sienna without splicing or cutting existing car wiring. While this type of installation is more labor intensive, it should be much more reliable over time as all original wiring remains intact. I went through the instructions and also watched an online video showing how to remove the internal wiring boards. The installation took me about an hour. I chose to leave the plug in the plug storage compartment as I will only be using it occasionally. I am very satisfied with this product.