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One good way to upgrade battery / alternator wiring
https://slantsix.org/forum/viewtopic.php?t=63915		 Page 1 of 1
Author:  GregCon [ Fri Aug 09, 2019 5:59 am ]
Post subject:  One good way to upgrade battery / alternator wiring
Just as a point of reference, here is the best way I've found in 'upgrading' an older car that has had a lot of electric load added without adding an entire 'load center' type fuse box.

Nissan, on a lot of their 2000+ model year cars, uses a very nice battery mounted distribution block that has fused ports...depending in which you buy you can get different amp ratings. You use the un-fused connection for the starter, and the fused ports to feed the car and take the alternator feed. It allows you to make multiple, high quality, heavy connections to the battery. I've used these when going to 135amp+ alternators and they work very well. Not too expensive, either.

Attachments:
nissan battery lr.jpg
nissan battery lr.jpg [ 159.35 KiB | Viewed 8447 times ]
nissan battery terminal.jpg
nissan battery terminal.jpg [ 73.17 KiB | Viewed 8447 times ]
Author:  Dart270 [ Fri Aug 09, 2019 6:34 am ]
Post subject:  Re: One good way to upgrade battery / alternator wiring
Very cool. Thanks for the info. Do you get these from the junkyard, or order factory Nissan parts, or from another source?

Cheers,

Lou
Author:  Rick Covalt [ Fri Aug 09, 2019 9:02 am ]
Post subject:  Re: One good way to upgrade battery / alternator wiring
Part # :?:
Author:  GregCon [ Fri Aug 09, 2019 2:52 pm ]
Post subject:  Re: One good way to upgrade battery / alternator wiring
There is no single part number. Nissan and Infiniti used these on a million models so there are different fuse ratings.

Here's one example. For $20 you get a Japanese OEM quality part that has several high amp fuses. There is a also a black plastic cover sold that goes over it all for another $10 (on Ebay).

https://www.ebay.com/itm/Fits-Various-2 ... 683e2fc369

Cover:
https://www.ebay.com/itm/NISSAN-Positiv ... SwZrhajdkv


On my car, I had a 135 amp alternator so I bought a 120 amp fused block to be on the safe side...if I started shoving that many amps I figured something was wrong....

These use spade terminals and can be connected up with the typical spade terminals sold in stores but it's best if you get the associated plastic molded terminal block that is part of the car harness. I just cut mine out of a car in a junkyard but it's possible they are sold over the counter as repair parts, too.

With this setup, I had my alternator fused as well as a feed for the radio/amp and a fuse for the overall car and another fuse for the EFI system. Really well protected and compact.
Author:  SlantSixDan [ Fri Aug 09, 2019 7:39 pm ]
Post subject:  Re: One good way to upgrade battery / alternator wiring
GregCon: A+ for this sleuthing and reporting! That's a hell of a handy piece.
Author:  Charrlie_S [ Sat Aug 10, 2019 5:53 am ]
Post subject:  Re: One good way to upgrade battery / alternator wiring
I have a question. It looks to me like there are fusible links in the housing. Are they "replaceable" if one blows, or do you have to replace the whole unit?
Author:  Rick Covalt [ Sat Aug 10, 2019 8:52 am ]
Post subject:  Re: One good way to upgrade battery / alternator wiring
What Charlie said. :D

I too was wondering what type fuses they were
Author:  SlantSixDan [ Sat Aug 10, 2019 11:28 am ]
Post subject:  Re: One good way to upgrade battery / alternator wiring
Looks like there's a big ol' variety of these and similar products; it seems to be a fairly popular way of doing things—see here. Also looks like the individual fuse elements aren't replaceable, but take a look at that VW "battery mounted fuse box".
Author:  GregCon [ Sat Aug 10, 2019 12:02 pm ]
Post subject:  Re: One good way to upgrade battery / alternator wiring
I never below a fuse in one so I haven't looked but I'd guess they are not replaceable. But when you lose a 60 or 80 amp fuse...a $20 replacement is probably the least of your concerns.

Keep in mind the device feeds your regular fuse block so chances are a smaller amp fuse there will/should go first. This device acts as 'big problem' protection and gives you the valuable function of providing multiple heavy take-offs from the positive post.
Author:  BUCKET 636 [ Fri Sep 27, 2019 2:50 pm ]
Post subject:  Re: One good way to upgrade battery / alternator wiring
Very interesting , thanks for the info .
My question is what do you do with the original + wire from the loom that connected to the alternator ?
Author:  GregCon [ Sat Sep 28, 2019 9:24 am ]
Post subject:  Re: One good way to upgrade battery / alternator wiring
It becomes 'no longer used'. You can remove it or leave it in the harness.
Author:  BUCKET 636 [ Sat Sep 28, 2019 2:56 pm ]
Post subject:  Re: One good way to upgrade battery / alternator wiring
Quote:
It becomes 'no longer used'. You can remove it or leave it in the harness.
er
Thanks.
I'm a bit electrically challenged , will the ammeter still work ?
Author:  GregCon [ Sun Sep 29, 2019 5:19 am ]
Post subject:  Re: One good way to upgrade battery / alternator wiring
No. As with most upgrades to the charging system that involve increased amperage, the ammeter is a casualty. There are ways you can make it work, with reduced effectiveness, but it's generally just left non-functional.

The truth is....by 2019, if you have a car's electrical system well planned and assembled, they are very reliable and your actual need for an ammeter is marginal.
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