i forgot whitch end of the wire goes to what terminal on the gauge is the wiring in the pic look right??

 

digital or dial guage?

if its digital it will read - instead of a positive #.

if its a dial it wont read at all.



just think of the path of the current, alternator doesnt draw in electricity does it? :P

 

its a cheapy dail, it was reading fine untill i pulled it out yesterday (car is back to stock) i just wanted to make sure

BTW remember my battery wasent holding charge, well i purchased a NEW red top altima, threw it in and it started up every time but, suddenly my "new" shitty alternator went out AGIAN! replaced it with a bigger junkyard mitsubishi alternator long story short, the battery was a defect i guess but fortunately the car runs cherry once agian appreciate the help man

 

wait, why wouldent the dail read anything if it was hooked up backwords? just curious

 

negative flow cant be read on a postive guage

 

i think they are supposed to read slightly negative if everything is working correctly

 

ammeters read + and - flow, but are unsafe as most don't use 10-12 gauge wire.

Use a voltmeter instead, less chance of car fire.

FYI with a ammeter, ALL current goes thru the gauge, think about the losses involved.