I actually sell these LED lights at the nation's second largest old car show swap meet, but I never looked into adding resistors or light bulbs. I just know it is needed on a lot of cars. When you have the older two or three-terminal mechanical flashers, those can be replaced with similar-looking electronic flashers that are made specifically for what you're doing. As far as adding additional sockets and regular bulbs, I'd be willing to bet you'll find videos on You Tube from other people who have done this.
This is very basic electrical wiring that any mechanic should be able to handle, and it should be fairly easy for you to learn. The biggest issue with splicing in wires is to solder them, then seal the splices with heat-shrink tubing. "Scotch-Lok" connectors and similar products do not seal out moisture and will lead to corroded wires. A former student just spent over six hours on a vehicle with all kinds of electrical problems caused by someone installing a remote-start system with Scotch-Lok connectors under the dash.
You only need the resistors or light bulbs for the signal circuits. They're only needed with brake lights and tail lights if you have a "lamp-out" warning system and it's telling you those lamps aren't working.
Tuesday, September 15th, 2015 AT 6:58 PM