I put a new alternator and battery on my truck. I have reset the battery monitoring system. I've tested the alternator im getting 14-14.3 volts everything is running fine but my battery light keeps coming on. I've checked the fuse 27 has been moved fuse 45 is fine all the connections are clean and tight. It's driving me nuts any idea

 

Check the ground connections??

 

I haven't checked grounds yet. Thats my next step. Do you happen to know the locations of the grounds?

 

All over the place. Start under the truck and find all the straps you can. They get rusty faster under there.

But also, any codes?