Check to see if your converter is working, and also check to see that you are getting a charge when your truck is running. You should be able to check at the plug in by use of a multimeter. You check the female plug on the truck by going to the 12 volt lead and then negative lead when your truck is running. Also, no offense intended, get a better battery. I have used Trojan 150 amp hour lead acid with fair results. This battery I have now is a Battle Born Lithium Ion 100 amp hour battery. It is expensive but it has a longer life then the lead acid.