89 supra brake and batt lights on

Busted Knuckles · 04-08-2011, 10:22 PM

When the 'Batt' light and 'Brake' light go on together, the alternator is failing. Check your voltmeter on the dash next time the lights come on. If no voltmeter, use a voltmeter on the battery connections. If the voltage is below 12V, the alternator is going bad.

04-08-2011, 10:22 PM	#2
Busted Knuckles 12psi boost Join Date: Dec 2007 Location: Atlanta Posts: 300	When the 'Batt' light and 'Brake' light go on together, the alternator is failing. Check your voltmeter on the dash next time the lights come on. If no voltmeter, use a voltmeter on the battery connections. If the voltage is below 12V, the alternator is going bad.