no speedometer
 

I recently replaced a clutch slave cylinder in my 2003 V6 (what a horrible experience). Everything seems to work fine now except I have no speedometer readout. I know I attached all the wires. I'm pretty sure I had one backwards, because I was getting a check engine light until I switched the polarity. I thought maybe I blew a fuse with the wrong polarity, but no luck there. Any ideas?