brake light issues

[fink406]

i have a1997 z71, third brake light works, blinkers work(blink fast though, could be related to issue, doubt it but...)anyway, reverse lights work, parking lights work,hazards,etc but the f#$%in brake lights do not work. i have two sets of tail light circuit boards tried both, same thing. all fuses seem to be good, same for relays, replaced bulbs. i tried testing the stop lamp switch, everything seems to be there, working,etc. but no brake lights. also i can not find a brake lamp/tail lamp wiring diagram. any help is appreciated... my luck its something stupid or that i have overlooked because it has driven me f@#$in crazy.. an e.w.d. would be greatly appreciated also.:

[clubracergt1]

Stop by Jones, and I can get that for you. Or... Send me your email addy, and I can get it for you tonight.