Originally Posted by New Project K5

My 1st blazer was a 74, no power anything, it was a great truck. Stay away from the power stuff its just more stuff to work on.

Originally Posted by 70-K5

You didn't just get a car... that's a Blazer, more commonly referred to as a truck... You got one nice looking truck there!

Originally Posted by pettyfog

And Bicycles are even simpler.. got even less stuff to work on.

Dont listen to people like this.. you'll never learn anything. When you're sixty you'll still be proudly bolting on new shiny carburetors.

First thing to do is practice doing searches on the net.
And google does a better job finding stuff than search on here. type site:blazerforum.com after the search term.
And the search term should be direct.
like
74 chevy truck power window wiring
When you do the ggogle search then you click 'images' and look through them

or..
k5 power window wiring site:blazerforum.com
will get you any results from here that are relevant.

Training: Here's a site I stumbled on by -gasp- doing a google search for something else.
How does my car work?