2003 honda accord problems?

I don't know if it has any relation but yesterday I installed a aftermarket head unit where the cubby was and added 2 subwoofer and an amp. Then when I was driving home my abs light came on and then my brake light. Then this morning it did the same thing and this time all the gauges dropped and didn't come on for a few mins. Then at lunch today it did the same thing but this time it didn't go back so I turned the car off and tried to start it but now it won't start. All the dash lights pop up but the car just clicks when trying to start the engine. The engine light has been on since I got it two weeks ago

Try "PROCESS OF ELIMINATION".

Is the bass really strong? Does vibrate excessively, causing loose electrical components to malfunction? Remove/disconnect the stereo, subwoofer, and amp wiring. Is the problem solved? If not, then it's something else.

Pull the check engine code. Pep Boys will pull the code for free. Then Google the code and read up on Honda Accord forums and/or ask questions regarding your particular code for your make, model, engine, etc…

Then use the "PROCESS OF ELIMINATION" to repair the problem. Please do not just start to replace sensors. Sensors go out due to others parts malfunctioning, such as defective or worn out mechanical components, and/or electrical short circuits.

"the car just clicks when trying to start"

You may even have a bad starter, alternator, battery. AutoZone checks them for free.
Also check to make sure your (-) negative and (+) positive battery terminals are tight.

We'll tell you exactly what is going on: You added an aftermarket amplifier and tour alternator does not have enough amperage to run it! The maker of the amplifier should be contacted to see what the *amperage rating of your new alternator must have.

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