i'm not sure where to start. my check engine light is on with a speed sensor code and a iac over speed. it has a 1100rpm idle. new iac new tp. I parked my truck for 4 days and when i got back the dome light, windshield wipers and speedometer are inop where should i start looking. I checked the fuses and they're all good.

 

check the relays.

 

I'm pretty sure it was the control module behind the stereo because when I unplugged it and plugged it back in it all worked for a short while. The module was gonna be $400 dollars and almost impossible to find the right one at a pick-a-part so it was easier to just sell the truck it had a few other problems too. Now its in Mexico. Poor truck! I'll get another one one day