Sounds like all those splices were wiring the left side driving light in "parallel" with the right driving light, and the left side running light in "parallel" with the right side running light. You will need an electrical schematic for your year make and model bike showing you the color codes so you do not cross wire to the signalling light circuitry or you could damage flasher or electronic switching circuits. "Parallel means connections branch together sharing a common voltage, rather than "series" like a daisy chained christmas tree light circuit where one break and everything is "open circuited" so the whole chain is dead.
Be sure, before rewiring anything, to face bike headlignt to a mirror or check in dimly lit garage and verify that all your signalling and flasher functions are okay BEFORE working on driving and running lights. Use your schematic and these attached simplified pix on the lamp wiring for front and rear. FYI, in the future before you modify something that is working, especially wiring, take pictures and carefully observe and label any wiring you separate (even though the wiring splices were cobby), they WERE working. All you need to do is disturb things as little as possible, use heat shrink tubing insulation, clean each wiring and splice one by one, soldering and then heatshrink the tubing to insulate...
especially if you do not understand wiring. You will learn as you go...methodically and carefully and before you know it you will be able to troubleshoot and fix based on experience and online help here...the learning will come later, as you do each repair, test operation and move on to the next. Do not hack everything up and then try to piece and patch things back together...it just never works out if you are not familiar with electrical circuits and troubleshooting techniques using digital multimeter (DMM) and other tools...
Lights And Ignition
Hopefully you did nothing to affect the rear tail light wiring. If so, I have included a pix below to help you with this. Inside the tail light, there are modular plugs that are available to hook up auxiliary lighting such as fender tip lights on models that do not come with them installed. These plugs usually have dielectric grease in them to protect the contacts when not in use. Don't remove this grease before plugging in any lamp plugs.
On models not having fender tip lights, you'll find that the #45 receptacle will be open and the HD lighting will contain the necessary plug to just plug in here and mount the light.
These connections are located behind the reflector.