Not picking on you.
I always try to cut wires at staggered lengths so if there is a bear spot there will be nothing to short out.
I use shrink tubing that you can get in different sizes to cover soldered wires. In some cases I will put some dielectric grease on the solder area before shrinking the shrink tubing that will prevent corrosion.
You did explain what you did very nice and great photos
Please add your state and model of bike you have. Click user CP @ top of page and then far left click edit signature. Thanks