1999 Ford F150 won't start won't crank guages quit working

I was having issues with the truck being sluggish to start for a few days. I hauled a heavy load home Saturday and Got up Sunday to offload. Only got a click. Put a charge to it got several clicks. Guages and aftermarket radio were pulsing Voltage showd extremely low. Placed a new starter selenoid on
Got more clicks. Had neighbor jump start me fired up.
Died about 15-20 seconds. Went and bought new battery. theft light/ abs lights blinking, odometer showed dashes, guages went flat.I checked what relevent fuses i thought might be bad, nothing there.
Today charged battery placed on, no guages no crank. checked starter connections, checked for shorts. Any ideas would be appreciated