Butt splice connector to join 10 gauge to 12 gauge wire?

Skibane wrote:

I bought an assortment of shrink butt splices, just to see how well they work - Never could get a really solid connection out of them, no matter how much heat I applied.

Buy QUALITY uninsulated splices, like TE Solisrand, and use marine/dual wall heat shrink.

TE does sell their Solistrand slices and terminals in small quantities, if you can figure out their part numbering system !