Electrical issue after installing speakers with amp and interior LED lights

2000 BUICK LESABRE
153,900 MILES
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RICHBOI85
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  • 1 POST
Within the last week I have installed speakers with amp and interior LED lights. Last night the lights near my speedometer went out and this morning it would not crank. Nothing came in but the phone charger light. I do have a second battery in my trunk for all accessories. I also have a car alarm, push button start system and rear camera installed and all are on the same wiring
Jun 30, 2020 at 3:38 PM
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ASEMASTER6371
  • CAR REPAIR CONTRIBUTOR
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Good morning,

What is the battery voltage with the key off?

https://www.2carpros.com/articles/car-battery-load-test

What is the battery voltage when the engine is running?

https://www.2carpros.com/articles/how-to-check-a-car-alternator

How much current is the amp rated at?

https://www.2carpros.com/articles/how-to-check-wiring

I attached a diagram for you to view. We need to do some testing to see if the alternator is any good.



Roy
Jul 1, 2020 at 4:27 AM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.