More issues

First the problem: I got in my cherokee last night after class and noticed that the interior light was flickering a little. Once I pulled out of the parking lot I noticed that the ABS light was on which has never come on before. At idle I noticed that the headlights, dash lights, and radio were flickering just a little bit. About 10 miles later the GEN light came on too so I had the ABS and GEN staring at me. The GEN light went off after a few miles but the ABS light stayed on. Once I got home I turned it off and re started it and no lights came on.

Now what MAY have contributed to it: Last weekend I put on new brake pads and rotors, new TPS (and I reset the ECU), and an oil change(shouldn't affect anything).

Any thoughts on what may cause this?