When I try to use the signal switch I get nothing.no noise no flashing inside or out.But when I check outside of the car all the lights come on as normal.
Test tinfoil or a large saucepan over your radio; does it stop the signal?
Assuming you believe that wearing metal on your head can prevent mind control, then it shouldn't matter whether it's aluminum or tin - the term tin foil for years has actually referred to aluminum foil anyway.
Tinfoil is common name for aluminum foilbut the ground wire could be a problem
Do your 4 way flashers (aka, hazard lights) work? If they do, the problem is in the switch, if they don't, its probably your flasherIts a aluminum tube shaped thing in your fuse box
