May be hooked up backwards?
or there is something draining the battery whilst engine is off.
get a multimeter and start the truck. as soon as you get it started measure the voltage coming from alternator. observe the minus sign carefully and ensure you have the right leads going to the right side of the battery. upon starting it should read around 12.8v rev the engine up a bit and keep it reved up for a minute or 2 and it should read around 14.4v. let us knwo how you get on.
81 views
Usually answered in minutes!
×