I wanted to do the same, not for me but for my wife.
But then I saw this.
A little more expensive but a lot less work.
![[Linked Image]](https://tm-img.com/images/2024/04/22/DSCN8450.md.jpeg)
The included cable with fuse directly from the battery to next to the seat.
![[Linked Image]](https://tm-img.com/images/2024/04/22/DSCN8420.md.jpeg)
Simply plug it in and don't forget to unplug before getting out.
Tested and approved by SWMBO last weekend.
She finds it much more efficient because the back, chest and arms are heated.