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Alternator Power Cable

Wire Harnesses & Adapters - Alternator Power Cable
Wire Harnesses & Adapters - Alternator Power Cable

The stock wire goes from the alternator to the starter with a 10' 8 gauge wire and then from there to the battery through another 8 gauge wire, then from the battery to the top of the under hood fuse box. Our alternator rewire goes from the back of the alternator to the power connector on the under hood fuse box with a shorter larger diameter wire. It can safely be run with the OEM one still connected.

  • More power to the fuel pump 
  • Brighter head lights 
  • Better ignition performance 
  • Better heated seat performance
  • Improve rear defrost performance 
  • Less alternator draw by more efficient power delivery to battery 
  • Better fuel economy 
  • Installs in 5 minutes
  • 4 AWG flexible cable replaces the much longer current choking 8AWG factory wire 
  • New protector boot included to reduce the chance of shorting at the alternator stud.

Works well along with our Alternator Voltage Booster.

This item and all electrical items are non-returnable. 

Connects to top of fuse box and output post on alternator. Factory wires stay in place. 

Monte Carlo/Impala Note: the terminal on the fuse box side must be drilled out to match the larger fuse box stud. 


Wire Harnesses & Adapters - Alternator Power Cable
Wire Harnesses & Adapters - Alternator Power Cable
Customer Reviews
4.9 Based on 50 Reviews
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Andrew G.
United States United States
2002 Grand Prix GT

Good, used as alternator rewire to the fuse box+ post. Had to pull the boot off the power wire to connect to Alternator power post, and had to slightly bend the opposite side ring terminal to fit on fuse box+ post because I have a Pivot MEGA Raizin voltage stabilizer and cut a section off of the red plastic fuse box cover to fit wire but everything looks clean and tight. This along with the easy performance 1.2+ voltage booster, grounding kit from Pivot and Alt rewire makes a great trip. Once I replace my stripped neg battery terminal with a better gold 3/8 bolt and nut I'll be very happy. All of the sensors and electronics and showing that they are happier over stock.. sorry GM but you skimp out sometimes...

Chip F.
United States United States
Super cable

Lights are brighter and seems to start faster. Great product

Ty C.
United States United States
Great gains

I purchased this product to upgrade my alternators output. Originally my aftermarket head units clock kept resetting every few days. I eventually added this with the atl booster and it held up a lot better. Now I upgraded to the big 3 with the 2ft 00 gauge wires from Harbor freight. One added with the original engine ground and 1 added to the negative battery line. Big improvement in my electrical system. I Didn't have to cut, solder anything.

Ethyn C.
United States United States
Alternator Power Cable

Didn't notice much of a difference. Original rubber boot and plastic cover won't fit over the bolts with it on. Still gave it 3 stars because of solid build quality and fast shipping.

Eric R.
United States United States
Easy install

I didnt see any changes but I like to have redundancy built into the electrical system. The original wiring is laughable.