Where to get new wiring?

My wiring to my automatic shift indicator light must be bad, because the fuse is fine and I've put in a new bulb already and it still doesn't work. So where do I go for new wiring? I'm asking here, because I just don't know where to begin to look or if I'm even asking for it by the right name.

Don't know if you really can do new wiring inside the car without a TON of work, but if you're up for it, just ask the shop for a interior harness, it'll cost you a lot of $$ probably though.

Your best bet is to probably just run a new wire or find where the wire (s) have an issue with a multimeter.

Thanks man, just the information I was looking for.