Well i hop in my truck to take off for work, stick my key in as normal and try to start it and it wont start. Now obviously i would normally think its the battery but all the lights inside the cab started flashing intermittingly. As well as a red dot on my guage panel that i have never seen flash before. I didnt have time to take the battery in, only disconnect it. About 2 days ago I did install aftermarket speakers but i dont know if thats playing a roll in this or not. Any suggestions? Anyone know why the lights would randomly flash like that? BTW is a 05 quad cab. Thanks

 

i know the red light on my truck means a dead battery

 

Yeah, I ws going to say it sounds like a very low or dead battery also.