jlfenner

Charge and brake light cam on. So like all my other previous toys, i checked the brake fluid level first and finding it full went and replaced the alternator. Always turned out to be the alt.

After installing the new alt, charge and brake light still on. Never having dealt with this and having very limited electrical knowledge, i searched and everyone said get a multimeter and check everything.

After charging my battery to full, i checked it...12.6.
Started truck. Checked at battery terminals....12

So no Chargy. I decided to test at the alternator at what i assume is the power to battery (the wire held on by the nut, not the plug)
Testing that found it to be same as the battery.....12.

My question...
When testing the alternator at that spot, shouldn't it be reading around 14 or 15 volts?

FrankTorres

Yes, between 13.4 to 14.7.
You have a bad alternator...