Re: Battery drain, low voltage no crank
You need to get both batteries up to full charge and then have them tested. I have seen batteries go bad in a matter of minutes. It doesn't take long for a shorted cell to kill one.
When you say that your batteries are good, how do you know that they are good without testing them. The rapid clicking is the relays trying to lock in which is a sign of low voltage.
96 F250 XLT 4x4, 4:10 gears, 5 speed, Tymar intake and HX hose, downpipe, pyro and boost guages, coolant filter, Luc clutch