1996 chevy k3500 454 auto

Hey guys-
Another wonderful problem with this damn truck.
A few days ago, maybe a week, my daytime running lights just quit. I did a search and mostly found people saying that's a good thing, why
would anyone want them on anyway. So, I did nothing, it was too cold to want to mess with it.
Then, a few days later, my truck was getting a little bit harder to start. Still started fine, just it was slower turning over. This lasted just one day.
The next day it started right up, ran for a while warming up and I left for work. About 100 yards from my driveway it just stalled and wouldn't start, battery acted dead.
All I needed to do was touch jumper cables from my battery to another vehicle and I could start my truck up like it was perfect.
I was told to check the alternator with a screwdriver on the back of it to see if it's magnitized and it was, so he said that my alternator was working fine.
I cleaned the battery terminals, side ones, and replaced the positive top post one. Still the same thing.
So, I purchase a new battery. It starts right up, and lasts for a little over a day, then it's right back to the way it was before. Except, now I have no blower, radio, clock, cruise control and wipers. The dim and bright lights, dash, radio, etc. lights work, the cd player will eject and take a cd.
I have checked all the fuses and all are good, I used a multimeter. The only ones that I didn't check were the ones with more than 2 connections (didn't know how to check them).
I used my jumber cables as battery cables to test to see if the cables were bad and still nothing turned on.
What is wrong with this piece of crap?
Any suggestions?
Thanks. -Tim
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mudmantim wrote:

    Sounds to me like you have a bad ground in the charging circuit. Charles
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Ok, I checked out the voltage with it running and was only getting 11.43 volts.
So, I changed my alternator and I am getting the correct volts now, around 14+.
But, I still have no cruise, radio, clock, blower, wipers, rear defroster, etc.
Any ideas on this part? All fuses are good.
There has to be a common thing between all of these, but I can't find it.
Would the alternator be the bad ground in the charging circuit you were talking about Charles?
-Tim
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DUMMY ALERT!!!!!!!!!!!!!!!!!!!!!!
It ended up being a 50 amp relay fuse that was put back in the wrong spot. Once I figured that out, everything came on.
Boy, do I feel stupid.
-Tim
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FYI....the screwdriver on the back of the alternator trick is pretty much useless. It'll tell you if it's charging, but won't tell you *how much* it's charging or if you have any dead diodes.
Dave
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Down at the starter you probably have a fusible link wire. It acts like a fuse but you can not see it when it has blown. Pull on the wire and see if it pulls apart.
Alan
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