1966 Chrysler Newport Electrical Battery Alltinator Well Relay Swith

1966 CHRYSLER NEWPORT
90,000 MILES
Avatar
ANONYMOUS
  • MEMBER
  • 1 POST
ELECTRICAL PROBLEM. BATTERY AND ALLTINATOR, AS WELL AS RELAY SWITH ARE ALL NEW. YOU CAN DRIVE, BUT ONCE YOU TIRN ON HEADLIGHTS, EVERYTHING GO'S, YOU LOSE POWER? IM STUMPED AS TO WHAT IT MIGHT BE.
Nov 9, 2012 at 5:58 PM
Advertisement
Avatar
JDL
  • ✓ASE Certified Mechanic
  • 16,098 POSTS
  • ASE Certified Mechanic
If there is a wiring circuit issue, replacing parts won't fix it. Use a digital multimeter across battery posts, everything off. Around 12.6 volts is a fully charged battery. Start the engine, take second reading across battery posts, engine running, the second reading should be higher than the first, if charging system is working.
Nov 9, 2012 at 7:09 PM
Avatar
JDL
  • ✓ASE Certified Mechanic
  • 16,098 POSTS
  • ASE Certified Mechanic
I did find some alternator specs, 1966 chrysler alternator. Engine rpm@1250, alternator output 13.3--14.3 volts. Check in both places across battery posts and alternator bat terminal. What about external voltage regulator?
Nov 9, 2012 at 7:33 PM
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.
Ask a Free Question
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.