The listed dimensions of 41-1/2 inches long, 37 inches wide, and 4 inches deep for the Curt Roof Mounted Cargo Basket # C18115 that you referenced are actually its inside/usable dimensions. The 41-1/2 inch length is taken from the inside of the top bar and not the bottom bar which is tapered out a bit from the basket.
I have attached a short video demonstration on this basket that you can also check out. view full answer...
The Draw Tite trailer hitch part # DT32GR that fits your 2019 Chevy Trax has a tongue weight capacity of 525 lbs which could have ability to carry a wheel chair assuming it and the carrier used weighed less than 525 lbs. view full answer...
I checked with our vendors and the only custom fit wiring harness for a 2016 Chevy Trax is the T-One Vehicle Wiring Harness item # 118659 you were looking at but it doesn't fit the LS model. As much as you don't want to you'll have to use a universal harness to add a 4-way connector to your Trax LS.
I recommend the ZCI Circuit Protected Vehicle Wiring Harness item # 119250KIT. This universal harness requires no cutting and uses clamps on the factory wiring harness to signal your trailer... view full answer...
The highest capacity hitch we have for your 2021 Chevy Trax is going to be the Curt Trailer Hitch Receiver item # C11527 you were looking at. This hitch has a 200 lbs tongue weight. Meaning the weight of your scooter and carrier would need to weigh less than 200 lbs. You will also want to check with Chevy or refer to your owners manual to confirm your Trax's tongue weight capacity. view full answer...
The Thule AeroBlade Edge roof rack that is confirmed to fit your 2016 Chevrolet Trax with raised roof side rails is part # TH7501B-TH7501B. This rack offers a 165-lb maximum weight capacity and its two silver-color AeroBlade Edge cross bars can be positioned on your roof between 24- and 32-inches apart, measured from the center of one bar to the center of the other. view full answer...
The thickness of the powdercoat can vary as can tolerances in the manufacturing process but generally the inside dimensions of the Curt cargo carrier # C18110 are approximately 47-11/16 inches by 19-1/2 inches. view full answer...