so i have an old 86 pickup that sits around and its real picky about when it wants to start. I charge up the battery (which is no more than a year old) and it starts up. then i go for a drive and stop somewhere for a few mins. when i come back to start it, it makes that "click" noise that it does when ther battery is dead, but the lights and everything work. then it will only start when i jump it.
I just replaced the starter about 4 months ago so i know its not that and i replaced all the spark plugs also. What do you guys think? could it be a bad battery connection, bad alternator, or that i just dont drive it enough? Oh and the truck has a little less than 250K miles