Replace your vehicle's side-mount battery post with a quality, solid brass post from StreetWires. The BASMS adapter allows you to connect the terminal for your vehicle's electrical components, as well as the ring terminal for your audio components, to the stud on your battery without overcrowding. Overall length: 1.3". Warranty: lifetime.

StreetWires BASMS Adapter Reviews

Average Customer Review:

3 reviews
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StreetWires BASMS Adapter

Written By SHOGOR, NJ on Wednesday, June 16, 2010

Crutchfield Customer Review (What's this?)

Threaded stud is too short, it strips out the battery when you try to tighten it up. Buy the longer one and cut and thread the stud to match the battery.

The only way to go with a side post battery

Written By Anonymous, NC on Tuesday, June 09, 2009

This is the easiest and best way to tap power from a side post battery for an amp, etc. Very easy to install, and looks professional when you are done.

StreetWires BASMS Adapter

Written By Jared, Coldwater, OH on Thursday, April 23, 2009

Crutchfield Customer Review (What's this?)

If you want a quality side post battery terminal with a professional-looking installation, this adapter gets the job done. Great quality product.

Hands-on research

What's in the box?

  • Side mount battery post adapter
  • hex nut
  • split lock washer

Product Research


Overview: The Streetwires BASMS battery adapter is designed to attach directly to vehicle batteries with side mount terminals. It allows you to mount a power ring or ring terminal to the battery. The diameter of the top bolt is 0.302".

Materials: This battery adapter is machined from forged brass for maximum current transfer and resistance to harsh environments.

Our Product Research Team

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