electrical systems & me don't get along, so i hope you can help. all the outside lights work except the front marker lights ( under headlights). put in a new clear bulb,tried the lights & the clear bulb turned milkey white, & didn't work. also, when i turn on headlights, the turn signal indicators inside both light up . they both blink, left or right outside. when i open drivers door the inside lights don't work, but will work when passenger door is open. also, are all 4 tail lights suppose to light up ? only the 2 outboard one's do. i dont know how to read wiring diagrams, so i hope you can help. it's a 1978 vette. thanks very much! gary.