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Brake lights want work and now lost all power to the truck. what could it be

(1990 Chevrolet 1500 Pickup)
on November 29, 2017
It just happened all at once
Tags: chevrolet, 1500 pickup
Displaying 2 answers & 1 comments
Popular Answer
on November 29, 2017
https://repairpal.com/diy/how-to-jumpstart-a-car?pos=rr&cat=sa
on November 29, 2017
Old school rule of thumb > ANYTIME an insufficient battery power condition exist - the FIRST thing to try is a jump start - using 'quality' jumper cables..

A 'lead acid' battery may test ok with a volt meter - however that does not mean the battery has a sufficient charge - OR - terminal connections - while under a load.

However 'load' testing the battery *while it's still in the vehicle* is a different story - it's a very good test for battery health and will help determine if the cable connections are adequate.

Good luck with it!
on November 29, 2017
You need to start at the battery. Use a volt meter to see if it has at least 12 volts. Or you could remove the battery and bring it to a parts store to have it checked.

Alex
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