I try to read carefully but sometimes it does not click in. Please state how many actual rear lights you now have and how many bulbs. I am just making sure I am giving the correct advice for the system you have.
Here is the general wiring: You need SIX wires in the turn signal switch minimum. One input from the flasher, one input from the brake switch, one each output to RF, LF, RR and LR. You will need 3 wires back to rear. One from the headlight switch goes back and jumps from the drivers side tail light to the passenger. This is the smaller filament on a dual filament bulb. (1157) and are , of course, your tail lights. Then the LR wire and RR wire from the turn signal switch. These go to the bright filament contact on a dual filament socket. Each wire is BOTH the turn and stop input to bulb. Keep in mind that the brake switch input and the flasher input must go thru the signal switch so that the large filament can be "controlled" so as not to apply brake switch power at same time as turn signal power is applied. This would cancel out the flash. Hopefully you have only one light on either side of the rear with a dual filament socket in each.
EDIT:
I see Cletis and DADS50 were trying to help you in another post. This deal is really not to hard, but it is difficult sometimes to understand electrical. We will all take a deep breath and help you. It very much needs a fresh look at the whole system. There are not that many wires. Do you have a schematic diagram? This would help allot. Maybe a fresh retrace of the wires would help. Let us know. No problem. If you have difficulty reading the schematic, we will help. If you have difficulty testing a circuit, we will help. Just let us know if you need the basics. Maybe we are confusing you or using too many terms unknown to you. That's our fault not yours. Health care workers, Veterans, Active Military and First responders are TOP PRIORITY.
It's like me asking you how to deal with a patient, I wouldn't be able to do it even with your help.
