Brakes replaced, ABS light on, truck won't start

I don't suspect the problems originate to recent brake work. The fact that the lights dimmed on the dash and now the truck wont start I would start by checking the battery connections are clean tight and secure, I would charge and test the battery then check the starter amperage draw, then check the charging system voltage and output.

The braking system and the no start problem are to different systems. Sounds like a voltige loss problem. As to say even a lack of correct mili volt to a wheel sensor will cause the light on the ABS to light and if the system is working will not cause the no start.