i have a similar problem im working the final bugs out.
light related issues.. not the same, but issues none the less. im going to update the tread in a sec. but here it is.
crazy lights
my thoughts are bad ground or two or three lol like rektr said.
my problem with the dash lights was a bad gound on the headlight switch. if you take your dash out youll see theres two connectors on the headlight switch. one big one on the back, and one black small one on top. the small one is the ground. all i had to do is take it apart and clean the connections.
also when you take your dash off check the metal peices under it for alot of surface rust. mine has it i guess from prev owner leaving the top off.
if you can remember which fuses were blown, you know where to start. if you cant use a multimeter (im still learning) find a friend who can and start looking for that bad ground.
dont do what i did and assume its a bad switch. i spend 30 bucks on a blinker switch and 30 bucks on a headlight switch only to return both lol.
get testing.