Are you sure your battery isnt on its way out? Also what are you running? I'm running 3 BIG ampliers and it ony drops to about 11.x amps when it cranked right up on bass notes. And adding up all the fuses in the amps gives me a maximum current draw of about 200amps! But i doubt it'll ever reach that. Camry alternators are 80amps, Prado/Highlanders(US) ones which apparently is a bolt on for camrys are 120 amps. So if you can run a camry alt, you can run a Prado alt.