idunno1987

Im about to order the components for my car stereo system, and was looking at doing the big 3 on my 2002 mazdaprotege with some 1/0 knu wire

anywyas Itook a look at my engine compartment...and well the alternator is deep in there I can't even see where the wire connects to it

as for my battery, I wouldnt be able to connect ring terminals to it as it's this style of terminal

http://www.reuk.co.uk/Battery-Terminals.htm

now I looked into buying new battery terminals, but then my stock car wire wouldnt fit on the battery,so I could cut the old connectors, but if that happened, it seems like the wire splits ioff into two places off the ground, and possibly off the positive, so How would I recombine these?

any help would be greatly appreciated, if no one knows what im tlaking about feel free to ask questions

also if someone can changet he title...it's BIG 3 help not bif

Dukk

I fixed the link too..

Anyway, just lop off the factory terminal and put a set of new terminals on at the battery. If you don't want to drop for fancy ones, the ones in the second pic on the link work fine - I like to use them with ring terminals on the bolts.



IMO the alternator charge wire is the least important of the big 3 so don't lose sleep over it. The grounds are the most important IMO.

idunno1987

how about these?

http://www.knukonceptz.com/productDe...prodID=BT-104N
Ill be running a 4 gauge power wire, 1/0 alt wire, and the stock wirirng..whatever gauge it is
and yes I know I have to get a positive version as well

I dont have the ones in that pic I have the ones in the first illustration

also had a question about fusing the power wire from alt to bat

I read you're supposed to fuse the wire to what it's able to carry
so im putting a 120 amp fuse on the 4 gauge amp power cable

for the 1/0 alt battery wire If I put a 250 amp fuse on that wire, would that not allow 250 amps to flow through that wire thus killing my alternator..if something went wrong with my bat or vice versa, Im pretty sure my alt is only rated for 80 amps

also if my car alternator fuse went on my stock wiring my car wouldnt die correct..since I have the new wiring?

aloso for the big 3 the alternator to battery wire is not a must?

thanks...once I get the answer here, I can place my order for my audio stuff

idunno1987

any reply greatly appreciated..just want to place my order

idunno1987

anyone please?..I want to get this stuff ordered asap

Dukk

Let's see..

They'll do the same job the inexpensive bolted lead ones do but they are prettier.

A fuse cannot pull power out of anything. If you have an 80amp alternator and that is what you are trying to protect, then an 80amp fuse seems appropriate. What about protecting the battery though...

If you have both wires in place, yes.

IMO, nice to have but not vital.

idunno1987

sorry I worded that wrong..I meant if something went wrong..the 250 amp would allow a helluva lot more current to flow...why Have I read in certain cases to fuse for the wires capability (so 1/0 wire would have a 250 amp fuse when hooked from alt to bat),and then in other cases to fuse for 25% more of your alternator (so I would have a 100 watt fuse on that wire)..that's what I would like to know

Dukk

You fuse the power wire from the battery for the capacity of the wire because the battery will dump 600+ amps into a dead short - more than the wire can handle.

idunno1987

ok but what about my alternator or battery do I not want to protect those in case of a malfunction?





you were saying to fuse to the power of the wireso 250 amp fuse in case of a short

I have also read to fuse to the alternators power or 25% above it

my question is why fuse to the power of the wire if I could get an alt/battery malfunction and then kill one or the other or both

I just need to know that My alternator or battery wont go or does this matter and just go for the power of the wire?

thanks

Mike

Dukk

My opinion is that the Alt-to-Bat wire doesn't need a fuse at all (most factory ones don't). Should you choose to fuse it, I believe it should be fused at both ends, in your case 100amps at each end, or if you want to fuse it only on one end, fuse it at the battery at 100amps.

The 0ga that goes from the battery to the amplifiers should carry a fuse large enough to protect the cable (250amps)