96' 4x4 2.7
After changing the dreaded fuel filter while trying to trouble shoot a major bog in the motor, my son decides to disconnect the battery for the evening so it gets a 'restart' to the electrical, he did however leave the negative connected. He reconnected the positive side a few hours later and nothing but a click and some buzzing behind the dash. I checked the battery numerous times and used my start box and nothing, just a click or two. The headlights will take a minute to come to life as if they were on a dimmer ???? Any thoughts or suggestions, I do not believe this is a starter issue, I tapped it a few times and nothing.... Battery is showing 75% with 12.5 volts

 

Your battery is border line on its voltage, definitly not a 100%
Try a re-charge and see if it takes it.

 

Since the positive cable was off it is possible reconnecting it caused circuit protection to open.

Possible poor connection at the terminal

Was it cleaned when reinstalled ??

 

UPDATE ! and slightly embarrassed.... after checking every fuse and preparing for the worst, I had the kid turn the key and I gave the positive battery connector a good shaking... Started right up.... Just need to be taken apart and cleaned thoroughly.... now on to the engine bog.... thank u for your responses...

 

Awesome.
I often stress that Toyota components are almost always bullet-proof. Problems are caused by poor connection, assembly or maintenance.

 

Then I see so many with Emergency type battery Terminals That might work to get you home from the wilds of the Mall

That cause nothing but frustration

 

Yes as a wise man say's "Clean Bare Shinny Metal"

 

For some, that phrase means a new model, with not a hint of poor maintenance