Stereo stolen, now I have no headlights?!?

My stereo was stolen about 2 weeks ago, 2 grand worth of damage to interior parts (not including cd deck). That is fine, insurance covered that, but my problem is this, after the car was repaired i parked it for several days and when I took it out for a spin I attempted to turn on the headlights but they wouldn't turn on, instead every side marker, gauge, heater control, brake lights and turn signal all flash about 4-5 times every second, checked all fuses and visible wires (not removing gauge cluster) and I cannot find the problem. The shop that did the work is reluctant to foot the repair bill and im fighting them on that but any suggestions would be helpful.