Is there a wire hook up for an eletric brake control stuffed up under the dash to hook on to. My H3 had it marked but I can't seem to find it in the H2 if there is one?

 

Should be in the fuse panel.

 

there is, it's on the floor board panel to the left of the brake pedal. GM makes a harness (~ $27)that will work with all brake controllers as well. but, i you have a backup camera, that connection may already be taken. i don't have a pic or anything, but if you get the gm harness, it will only plug into one connection.