turn/brake signal problems

Hey guys, I've got an awkward problem here. The passenger side brake/turn signals aren't working, but the running lights are. I've checked the wiring all the way back to the firewall with an ohmmeter and it all checks out. About .5 ohms from the dark green wire at the firewall connector to ground. Does this clarify the need for a turn signal switch? Possibility of a relay? We just got the old girl back from the paint shop- i haven't gotten to drive her in about 4 years, so I'm pretty pumped to fire 'er up, but I'm not so fond of tickets.

thanks for any help.