What does the 50 amp fuse labeled batt in the fuse box under the hood send power too ? If I dont remove it my battery will drain totally dead over nite. Its in a 1996 chev 1/2 4wd Z71 extended cab

no power at my power fuse under the rear seat ??? Do you mean the whole rear fuse box is dead . Or just a single fuse ? What number fuse an how many amp's ? Under hood fuse box I/P BATT fuse number 48 125 amp ,this power's the rear fuse box.

You don't need to replace the fuse box , an you don't have a dead short to ground ! The fuse would blow ! You have a parasitic drain on that fuse . You need to go to http://bbbind.com/free_tsb.html free wiring diagrams an power distribution diagrams , see what all other fuse's are feed from that an pull them out one at a time till the draw stops. There are some good videos on youtube showing how to do this ! How To Perform Parasitic Draw Test EricTheCarGuy You'll need a DVOM !

i have no idea as never seen this car but if this one of the big 100amp fuses then it could be the alternator --one of the diodes has failed draining the battery

All fuses get their power from the battery. The under dash fuse box is no exception.
In the under-HOOD fuse and relay box, there will be a 'Master' fuse that sends power to the other components. This will be a 50 or 75 Amp fuse. Check every fuse you see in that under-HOOD box, and one of the mains is probably out.
You'll need to find out why it blew, because there is definitely a reason when the big ones blow. It's a major short circuit.
Did you replace a starter, or alternator, or battery before the problem bagan?

There is a big fuse in the battery junction box (the fuse box under the hood) that is labeled BATT or ALT or MAIN. It'll be a large fuse 60-100 amps. It is likely bolted to the wires so you'll have to open the little access doors on the side of the fuse box to remove the bolts. Be sure you do this with the battery un-hooked.

Nowhere ---without factory wiring diagrams

You can spend big bucks, as I do for all my
vehicles, for the last almost 50 years & order
something of value you can actually use from
Helm.Com

You need a good VOM Meter & use MilliAmps
to look for current drains

You can not work on any product without reference
material & continually educating yourself on how things work

I assume the battery runs down?

Batteries only last 4 to 7 years

The test light only told you that you removed a fuse
& no longer are dropping voltage across your test light
bulb. You may be doing the right thing but have to
understand what your doing or what the results should be

I never walk to vehicle without a meter & wiring diagrams,
whether or not they are used

Under the hood is a fuse box. In this box is going to be a large fuse (between 60 and 100 amps usually) and it may be labeled 'main', 'alt', or 'batt'. This is the fuse that runs from the battery to the main power of the vehicle. When you hook a battery up like that it blows this main fuse. You'll need to replace that and any other fuses it blew out.

I suggtes check in the Power Distrbution Box (under hood), the power distribution box, trailer tow and electronic shift on the fly relay blocks are located in the engine compartment near the brake master cylinder.

Look position 20, 50AMP (Maxi Fuse) for Ignition Switch (B4 & B5) ans position 21 (same sizes) for Ignition Switch (B1 & B3)...




Keep us updated.

you have something draining the battery,check for any lights that might be staying on,interior light,stop light under the hood light(if any),glove box light trunk light, if you have a multimeter with amp testing capability or an amp meter you can check where the drain is by removing each fuse & put the probes on each side the terminals until you find a drainage,that way you might be able to find out what is draining the power & rectify it......hope this helps......cheers

There are a total of 5 fuses for brake and abs functions 3 in central fuse box on the drivers side inside truck fuse #9 - 7.5 amp fuse #10 - 10 amp and fuse #11 - 7.5 amp then there are 2 big fuses under the hood in the main battery fuse box next to the battery fuse # 6 - 50 amp and fuse # 28 - 30 amp