LAMF

My headlights on my 94 es300 dim when i hit the break or use the window switches. My battery is fine and I put in a new alternator. I do have a 1000 watt amp and 2 12" subs, but the lights dimmed even before i put those in and still with the systems off.

steviej

iTrader: (1)

sounds like a ground problem.

steviej

Tammy

You'll need to remove the battery to access the chassis and engine ground connections. Insure they are clean and tight.

Check for a voltage drop across the battery with a good digital voltmeter, when they dim.

vin 78

Like steviej suggested, check the headlight grounds.

flowbreak

my 95 es does the same thing. i have an escort x50 radar detector and it shows a good 1-2 volt drop sometimes more... when i brake or use window switches... i think mainly braking is because of the lights in the back or something.. this thing is getting old D:

LAMF

yeah i had the voltage checked when i had my old alternator and it would drop a lot when the lights turn on and then more when anything is used. the new alternator made the issue a little better but didnt do much. I'll check the ground connection. thanks for the responses