While figuring out a short with my right turn signals, which I traced to a pinched and bared turn signal wire, I discovered that the previous owner spliced the heck out of a bunch of wiring to add fog lights. I want to clean up all the splices with connectors but I’m not sure what to use to splice three wires to one. I added the pic of the wires. Thanks for the help!

It appears the splice was made into the headlight wiring.  White is the low beam, yellow is the high beam.....black is ground.

I bought a kit from Vintage Motorcycle Connectors.  It works very well and you cannot tell the crimped connections you make fro the factory ones.....the bullet connectors are well made and the crimping tool works great and is quick to master.
http://www.vintageconnections.com/Products/Kits

For connecting multiple wires you can either crimp a few of them together, or install female connectors with multiple places to plug wires in:

Looks like a WAGO block. I’d go with the connector Dave recommended. I use them all the time.