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ihave to be on the road @ 5 am tomorrow, and of course the truck doesn't want to crank. turn the ignition switch and nothing. buzzer does come on sounds weak though. my tach goes below zero (almost all the way back around). i am thinkin its the batt. because she will crank with a jump and will be fine for a few weeks then its back to square one . last time this happened took the batt. back to wal mart for a test, of course they said it was fine. my truck is singin a whole other tune. but if it isn't the battery , other than a short, why is this problem recurring?
You're going to have to check the battery voltage with a multimeter. There are very few things you can do with an electrical system without the proper tools.
aight guys.....got it fixed....ignition modulater went bad, i had a lifetime warranty on it - so no cost. did step-up the alternator though, went to 80 amps. i kno w, i know ..probably need a few more amps due to those damn stock headlights. sory it took so long to get back with ya'll, i am only in town 2 days a week...but i thank you all for your input...keep on rockin