Hey- I recently installed my amp, and I’ve had to turn the car on and off to verify the wiring got power. Anyways, as i was pretty much done, the interior/exterior accessories such as headlights, windsheild wipers, gauges, ac, heated eats, etc turned on. But when I turn the key to start the car, theres nothing. All I hear is a single click near the passenger side footwell. I’ve checked every related fuse and relay. I’ve checked the battery. I’ve tried jumpstarting my car. I even disconnected the amp wire to the car just to make sure it wasn't that. I’m thinking my starter just has bad connections but I knocked it with a crowbar and it didnt work. I need help.