I think you may have misunderstood. .. I have 3 wires and this is factory wiring as you can see from the photo below. Yes someone has spliced them but none the less this is the original wiring going back to the taillights... I cut the butchered crap out previous owner had rigged up and now I want to fix it.

http://img.photobucket.com/albums/v678/pdinkle75/20150228_110640-1_zpsm0uezfud.jpg


1964 impala ss
1949 chevy 3100