hey howieb4,
i don't have the schematics with me but for the 72-74gtv (115) the courtesy lights are a three way switch.
With the little lever In the middle the light never goes on.
With the little lever up (?or down) the light will go on (this is the circuit to ground at the light)
With the little lever down (?or up) the light will go on when the door is opened (this circuit the current flows thru bulb, light switch and thru door switch.
I would try removing both passenger and driver's side bulbs. If fuse blows there is a short before one of these two points (most likely).
If no short, try a bulb in one side only to determine if passenger or driver's side is causing the short. (i would suspect the short to be before bulb as if it was after the fuse probably would not be blowing as this is the normal circuit to ground).
I will also check when i get home to see what other components are utilizing the same fuse.
Best of Luck,
Joe
i don't have the schematics with me but for the 72-74gtv (115) the courtesy lights are a three way switch.
With the little lever In the middle the light never goes on.
With the little lever up (?or down) the light will go on (this is the circuit to ground at the light)
With the little lever down (?or up) the light will go on when the door is opened (this circuit the current flows thru bulb, light switch and thru door switch.
I would try removing both passenger and driver's side bulbs. If fuse blows there is a short before one of these two points (most likely).
If no short, try a bulb in one side only to determine if passenger or driver's side is causing the short. (i would suspect the short to be before bulb as if it was after the fuse probably would not be blowing as this is the normal circuit to ground).
I will also check when i get home to see what other components are utilizing the same fuse.
Best of Luck,
Joe