I drove it home and parked it, removed key. Came back and tried to start it up and it made a buzzing noise, I looked it up and it appeared to be the solinoid or something. I tried to crank it up again but no noise was made this time... The first time I tried, I heard buzzing and I the lights dimmed a little as if it was pulling power.. The second time i tried, no noise was made and the lights stayed bright. Please help!!

 

Charge the battery over night and load test it.https://www.batterystuff.com/blog/ho...ry-is-bad.html If it fails the load test,could be why the solenoid is buzzing. If it passes a load test make sure all connections are tight at the battery,solenoid and ground wires especially the main engine ground from the battery. Also make sure the engine to frame ground strap is ok. Plus you need to check once you get it running that the regulator(or ecm module) is charging around 14 volts back the battery while a little above an idle. Would help to know what year model and engine. 330 or 500.
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