I put the injection cleaner in on Monday during lunch. Drove FAST for about 20 miles. When I got back, I turned it off and turned it back on to see how it started. It started fine. Since then, it started rough again everytime. Now it won't start at all. I just tried to start it this morning and it sputtered and

wouldnt start. The headlights and dash lights came on, and I can't get them off. If it was the battery, would my lights still come on? If it was alternator, I would think it would start, but not hold the charge, not sure???
There hasn't been an engine light on. If it was the starter, would my engine light be on. It has 120,000 miles.
I just had bodywork done to it. They had to replace one of my headlights. Do you think there could be something electrical? Last time I had bodywork done, the shop had to replace my battery because it kept dying.
Any ideas????
