Markus56 Posted May 20, 2010 Share Posted May 20, 2010 (edited) A little bird told me you could run a heavy wire from the charging post of a high output (GM or Maxima) alternator straight to a positive post of a battery, as to not set your wiring harness on fire when running 10 headlights and a stereo. Is this true? Edited May 20, 2010 by Markus56 Quote Link to comment Share on other sites More sharing options...
NoahDL88 Posted May 20, 2010 Share Posted May 20, 2010 I'd still put a fuse in there. The size of the load would determine how much wire you'll want, but at some point the alternator won't be able to keep up anyway. Quote Link to comment Share on other sites More sharing options...
Markus56 Posted May 20, 2010 Author Share Posted May 20, 2010 the wire is the fuse on a related note, if you spliced the ends of 16 gauge speaker wire together, does that make 32 gauge wire? Quote Link to comment Share on other sites More sharing options...
NoahDL88 Posted May 20, 2010 Share Posted May 20, 2010 If they are in parallel it would be 8 ga wire Quote Link to comment Share on other sites More sharing options...
Markus56 Posted May 20, 2010 Author Share Posted May 20, 2010 That is what i meant, stupid reverse gauge numbers crap ALSO: for anyone reading this, DO NOT get a "Quality Built" brand re-man alternator. They are garbage and like to set your wiring harness on fire. Quote Link to comment Share on other sites More sharing options...
naru Posted May 20, 2010 Share Posted May 20, 2010 Two 16 gauge wires in parallel would be the electrical equivilent of a single 13 gauge wire,not an 8.(between 13 -14 actually) Quote Link to comment Share on other sites More sharing options...
Markus56 Posted May 20, 2010 Author Share Posted May 20, 2010 Interesting. Why? what about two 14 gauge wires in parallel? Quote Link to comment Share on other sites More sharing options...
naru Posted May 20, 2010 Share Posted May 20, 2010 Interesting. Why? what about two 14 gauge wires in parallel? 13 gauge has real close to twice the cross section of 16 gauge. 2 14`s in parallel is like an 11. see this http://en.wikipedia.org/wiki/American_wire_gauge Quote Link to comment Share on other sites More sharing options...
GeneralDisorder Posted May 20, 2010 Share Posted May 20, 2010 Upgrading the wire from the alt to the battery is so you don't fry the stock wiring if/when a near dead battery tries to pull the full amp capability of the alternator. The stock alts were 55 amp and the wireing is sized for that many amps and possibly a little overhead (though I wouldn't count on it after 20 years). If you drop in a 100 amp alternator, the battery can and will pull all 100 amps off it if it's low. Battery's don't care what your wireing is capable or and are not goverened by fixed draw's like lights, fans, etc. And that is only part of a properly laid out electrical system. It should NOT go directly to the battery terminal as that is a huge fire hazard. It should first go to a circuit breaker close to the battery and then as short a lead as is practical should go to the battery terminal. In addition, accesories should NOT draw off the battery terminal - instead setup a new fuse panel that is driven from a junction off the battery terminal. You can find these junction's (simply a plastic deal with a threaded stud and some prongs for wire routing) on many GM products from the 80's and 90's in the junk yard. From there you should run through a circuit breaker and then to the main power input of your new fuse panel. I have been using the painless performance fuse panels and so far I like them. They are offered in water resistant varieties. summitracing.com etc carries their whole product line. GD Quote Link to comment Share on other sites More sharing options...
eulogious Posted May 20, 2010 Share Posted May 20, 2010 You should also upgrade your grounds as well, just to be on the safe side. If you add wire to your charging system, then you need to add the same gauge wire to your grounds as well, so you don't add any more resistance to your charging system. Granted you could probably get away with not upgrading your grounds, but you might as well. Doesn't cost that much, and makes your car safer. Look into car stereo stuff. The wire is great, they have easy to work with connectors, and have inline circuit breakers. I get all my stuff off ebay for cheap! Quote Link to comment Share on other sites More sharing options...
Gloyale Posted May 21, 2010 Share Posted May 21, 2010 Fusible link wire soldered into the end section where it will connect to batt or block. Quote Link to comment Share on other sites More sharing options...
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