Nissan Repair: brakelights, volt ohm meter, nissan pickup

Question
I keep blowing a fuse on my brakelight.  Where do I need to start to repair theproblem?  I have a 1995 Nissan pickup, with 142,000 miles on it. I just had the front end aligned, the front brakes replaced, & the a/c fixed.  Where can I get download  free wiring diagram on this truck?

Answer
Byron,

I would check the brake lights for corrosion first.  If there is none then the process of elimination is the brake pedal switch and then the multi switch that turns the headlights on.  You can check resistance in the circuits with a volt ohm meter.