Let me be a little specifical. I bought a new turn siganl switch. It has 10 wires. The trun signal switch that is in there now (original FoMoCo part C8SA-13B302-D) has 12 wires with 10 connected. The Brown and Yellow w/ Black Stripe wires are NOT connected. My question is.....What is the Brown wire and the Yellow w/ Black stripe for and do I need them?