[Shop-talk] electrical problem with truck

[john niolon]

jeff….     regular led acid battery ??     Everstart Maxx27 800 CCA  regular 
Walmart battery

When it died, did any of the electrical items still work?  Lights, etc.?  when 
it first occurred ,, when I tried to restart, .. starter just clicked and I 
remember the a/c fan still blowing


Donald...  How large is the cable from the alternator to the battery?   feed 
from battery to alternator is #4 wire


Dave... I was thinking a dirty battery clamp.    battery clamps are new this 
year and clean, no corrosion on connections

John...   How is the volt meter in your truck grounded, to the frame or to the 
motor?    voltmeter in dash is grounded to dash frame  voltmeter used to check 
under hood is grounded to frame not engine.  
I'll go back and check ground connections. Alternator has a ground terminal of it's 
own... 
it's #10 wire grounded to the frame and of course the alternator is grounded through it's 
mount.

Pat...  what is the relationship between the frame terminal & the rest of the 
electrical system?  Terminal on the frame rail is fed by a 
4' piece of  #4 wire from the i/p solenoid lug where the cable from the battery is connected to the solenoid.

Jimmie..    What's 
the voltage at the terminal with those accessories 'on' but the engine 'off'    
hmmm ?? don't remember checking that, …  I'll do that

 How big is the alternator?    100 amp single wire from CVF racing

ya'll have given me lots to check and recheck and some I haven't thought of...  
 going back through my diagnostics and check connections too.  I bought a 500 
amp load tester yesterday and will put sufficient load on the battery.  Battery 
is under the cab and I have to lower it to check it out and with the low truck, 
I have to raise truck on jackstands.. silly me, I thought battery would be a 
low maintenance item ...duh.   so checking at a shop somewhere is a very large 
pain.

points I'm considering.... larger ground wires from frame to engine.... alternator to frame and check resistance from solenoid lug to the terminal on the frame...   the saga continues

thanks for all the replies and points to check...   you guys are the best

john
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