wire size for a 140 amp alternator

do i need to upgrade my alternator wire for my 140 amp alternator.i upgraded from my stock alternator,it was a 65 amp.

i would recoment just to run a 4 guage...

Originally posted by jaredmXG



i would recoment just to run a 4 guage... where would i run it to from the alternator.the wire from the stock alternator goes back to some little fuse,,it is on a 86 chevy c-10 fulsize.

anybody else,please help me ive got to get my truck going because my wife is pregnant.

you can run it right to the battery im pretty sure. just put in a 140 amp fuse or two fuses close to that. car audio store should have that

Originally posted by BclassBD

the wire that goes to the battery comes off of my coil by the starter.how would i find out where to run the wire for my alternator at..thanks

you can run it right to the battery im pretty sure. just put in a 140 amp fuse or two fuses close to that. car audio store should have that

Originally posted by BclassBD



you can run it right to the battery im pretty sure. just put in a 140 amp fuse or two fuses close to that. car audio store should have that

or a circuit breaker if you have room, lots easier to reset than take off cover and replace fuse. Also, if it's one of those alternators that was wound up to 140 amp, be ready to replace it in a year or so. I had to replace mine in a year and a half, but it was only running regularly for about a month out of that.