How to unhook the stereo wires in a 1996 s10 chevy blazer

limited info generic answer --no yr of vehicle or model s10 pick-up or blazer ------check paper work for cross reference wiring to your truck or customer assistance

http://www.modifiedlife.com/1999-chevrolet-s10-blazer-car-radio-stereo-wiring-diagram/

they should swap just fine. 1996 and on are interchangeable. 1995 could go either way. 1994 and older are interchangeable.

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Get a Haynes or Chiltons Manual for diagrams and instructions for your vehicle.

check the fuse to the injectors it may have blown when the wire arced.

Hi there:
Check this on 1998 Chevrolet S10 Blazer Car Stereo Radio Wiring Diagram:

Car Radio Constant 12v+ Wire: Orange
Car Radio Switched 12v+ Wire: Dark Green
Car Radio Ground Wire: Black
Car Radio Illumination Wire: Gray
Car Stereo Dimmer Wire: Violet/White
Car Stereo Antenna Trigger: N/A
Car Stereo Amp Trigger Wire: N/A
Car Stereo Amplifier Location: N/A
Front Speakers Size: N/A
Front Speakers Location: N/A
Left Front Speaker Positive Wire (+): Tan
Left Front Speaker Negative Wire (-): Gray
Right Front Speaker Positive Wire (+): Light Green
Right Front Speaker Negative Wire (-): Dark Green
Rear Speakers Size: N/A
Rear Speakers Location: N/A
Left Rear Speaker Positive Wire (+): Brown
Left Rear Speaker Negative Wire (-): Yellow
Right Rear Speaker Positive Wire (+): Dark Blue
Right Rear Speaker Negative Wire (-): Light Blue

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should be no problem, i didn't see any difference in the wiring

check the head lamp dimmer swicht

try this link,

http://www.autozone.com/shopping/repairGuide.htm?pageId=0900c152800bfba5

Hope this helps

check for loose or cracked vacuum lines, and/or the rotor. It may not be making consistant contact.