Dash Lighting

[92Z28VERT]

Hi I am a new member needing help. I have a 90RS Camaro and a 92 Z28 Vert Camaro. Both have the same problem, at nigt when I turn the lights on both turn signal indicator light up. Any ideas where to start looking?:banghead:
I look forward to this forum and hope I fnd it as helpful as my Corvette Forum.

Thanks