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Originally Posted by darksparkz
If I run alternator to battery positive directly, then I may want a fuse, if I run it through the stock fuse box, then I don't really need to.
I can't quite find which is the negative or positve ends on the alternator. I'll look up service manuals to see which is the right one. I think the engine grounds to the chasis twice, once in the intake manifold and one between the intake and alternator.
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I was just looking somewhere (probably in the Cam section) and someone had a good shot of the pos. post on the alt.
And why wouldn't you want to fuse it? No such thing as being "too safe", especially about electrical surges. Unless you're confident you enjoy 10 lb paper weights that look like amplifiers and such. Not saying it would be that drastic, but its always a possibility.
I imagine the stock fuse in the box is for the stock wiring (which will only allow a certain current flow, which is partially the reason for adding more wire to begin with, right?). You're adding aftermarket wiring, so wouldn't it make sense to add an aftermarket fuse? Its not like adding the extra fuse is going to hurt anything.
Now that i think about it, you almost would require the AM fuse if you're wiring direct to the batt. If the main fuse is to blow, and you still have the circuit being completed by the Big 3 wire you added, the current (and its' possible spikes) will still be avaliable, so you would want to fuse that connection too.
Some people do it, some people don't. I was just saying its something to think about
