Sounds like your not very in tune with wiring. You can go straight to the wires that are going to the bulbs which is a few inches away. If you tap the bulb that blinks for the turn signal they will flash. Only they will probably quick flash without any resister wired in..
Personally I wouldn't do it. It doesn't look good at all. Someone already nailed the posing fact to audi.. Would be laughed right out of this region running around with something like that..
personally i think it looks cool but i may speak differently in person.. when i installed my neon under dash in my v6 i wired it to the headlight switch so whenever my headlights were on those lights were on too.