Toyota elec sytems in these truks are extremely tempermetal, The brake and charge light will come on when there is any interruption at all, even so much as a small short in your clock, all the way to a bad alt, or fried ecu. Most COMMON cause is a bad alt, Hence why was told its a common prob and you need to bust out your volt meter to find out.
A dumbass wud wnder why when hey have a chagrer hooked up to their bat and they turn it OFF, their brake and chrage light comes on int ehir tuck if its still hooked up, they wudnt know bout tyta elec sytems
They key of this being that if BOTH the BRAKE AND CHARGE light are on together, you have a bad alt, charging issue, or a short
