with key on, fuel, temp, oil max, volts min, charge light on, hazards glow and flash, park brake glows, and fuel pump is LOUD, WHY??

 

also, what's the fix for the volt guage going up and down when the turn signals are on?

 

84 brat carbo

I've got an XT6 that the volt gauge drops on when the turn signal is on. I'd also like to know how to fix this if anyone knows

with key on, fuel, temp, oil max, volts min, charge light on, hazards glow and flash, park brake glows, and fuel pump is LOUD, WHY??

 

also, what's the fix for the volt guage going up and down when the turn signals are on?

 

84 brat carbo

If your gages are acting wierd and all (or most) of your red warning lights are on with the engine RUNNING, but everything appears OK with the engine off, it's likely at least one diode is fried in the alternator. This will allow AC voltage to enter your electrical system and cause many odd things to happen. I just went through that with the wife's '88 DL. New alternator cured it. Autopsy of old alternator revealed one burned diode.

I've got an XT6 that the volt gauge drops on when the turn signal is on. I'd also like to know how to fix this if anyone knows

I'd check to make sure you have good grounds. Do your headlights dim at night with the signals on, too? Alternator might also not be putting out enough power to run your electrical AND charge the batter. Can throw a voltmeter on there and check to be sure, though.

You stated that the key is 'on' but is the engine running? If you just turn the key to the 'on' position the warning lights turn on as a test so you know that they are good and working. If the engine is running then follow Rouneye's post.

 

The fluctuations you see with the the voltmeter is caused by the voltage drop in the wiring between the battery and the voltmeter as current is supplied to the signal system. This drop should not be much more than about 0.5 volts as a guess. As the current flows through the supply wires to the load, a small amount of voltage is dropped across the wire because of the small resistance in the wire. The only way to fix this would be to increase the wire size to have less drop in the wires.

 

The voltage changes could also be due to a weak or poorly charged battery. Clean the connections and check the alternator connections also. This problem would be noticed more at idle, when the alternator's output is lower.