Electrical issues...batteries

2000 FORD F-250
Avatar
STAN MCCALL
  • MEMBER
  • 1 POST
I just put two batteries in my Ford F250 diesel. After the "wait to start" light goes off and I turn the key over, everything goes dead. Any ideas?enter your question...
Dec 13, 2010 at 9:17 PM
Advertisement
Avatar
CARADIODOC
  • ✓ASE Certified Mechanic
  • 34,321 POSTS
  • ASE Certified Mechanic
Sounds typical of bad connections. They will show up best when you're trying to pass current through them, so turn on the head lights, then grab a test light or inexpensive digital voltmeter and start at the posts on one battery and test for 12 volts. Move the probes from the posts to the cable clamps, to the body, and to the next place down the line until you find the spot where the voltage disappears or goes real low. That's where the bad connection will be found. Don't overlook the positive cable where it might be bolted to an under-hood fuse box.

caradiodoc
Dec 13, 2010 at 9:30 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.