electrical gremlins are back

........... i pulled the old wire going to the alternator out and the wire from the starter relay to the welded splice. ........ Also a 16awg fusible link seems kinda small for this doesnt it??

You have me confused because there is no wire from the welded splice to the starter relay. There IS one (black) from the splice to the alternator

So far as connecting them there are various sized butt connectors, but if you can solder, that is likely best. I HAVE STOPPED using plastic butt connectors, and instead use BARE ones which I can crimp and or solder and then heat shrink. Sometimes with several wires, some of which are large gauge, making two splices is easier and more manageable.

So far as the fuse link size, even a fuse can be viewed "as a short undersized wire." A fuse is something in a circuit which is "easier to melt" than surrounding wire/ devices. The fact that it's undersized BUT IS VERY SHORT means that there is very little voltage drop under normal conditions.