How to do a Basic Wire Splice

I found the heat shrink with sealer inside at my local Harbor Freight. It came in an assortment pack packaged in a clear plastic bin box. They're approx. 5" lengths and the sizes covered from 20ga. up to the 1/0 battery cable I used on my battery to trunk conversion. Price was quite cheap. Let the splice cool completely before handling because the sealer stays liquid for awhile before setting up.