Replaced NSS switch/wiring.ballest resister.voltage regulater.alternator now what???

Replaced my whole cluster today and surprise! Problem fixed. Everything except that the speedometer doesn't work. It worked in my old one so im wondering is there a way to fix this problem. Maybe take the working part and switch out the non working one so my cluster could be complete?

Good!

You'll want to investigate the source of your water getting into the dash area. Look above while you have the cluster out, the windshield leaking is probably what got your switch wet. If you don't fix the source, the problem will come back eventually. I know it's a little wetter in your neighborhood than mine, we only get rain about 30 days a year down here in Fresno, CA. :-D