Old Blood Noise ABY Line Switcher - Used

Old Blood Noise ABY Line Switcher - Used

Marsoni

M251S

$34.99

Get it in 3 business days with 1 day shipping. Friday, May 29

Old Blood Noise ABY Line Switcher - UsedSwap between two lines in incredibly smooth and quick fashion with Old Blood Noise Endeavors' AB Y Line Switcher. This AB Y Line Switcher is in very good condition and is fully functional. There are few signs of cosmetic wear and Velcro on the back.

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Exchange/Return Notes

We offer a 30-day return/exchange service after receiving.
Final sale items are not eligible for returns or exchanges.
To process your return/exchange, please contact us at [email protected]
Please click here for more details>>> Return & Exchange Policy

This relay has experienced failure again after just a couple of months of use. It's not the mag coil that fails but rather the contacts are of such low quality that they corrode beyond their ability to conduct power, and fast. I have had to change two of these so far and am on the third one. The seller will ship replacements but who wants to keep replacing them? I have to travel in my RV with a spare. This relay has never been exposed to the elements. It's safely mounted inside a sealed bay. Be aware of any brands that look like this, they are all the same.

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Reviewed in the United States on November 15, 2025

Verified Purchase

Dave Kulina

Phoenix, US

★★★★★ 5

Works great

I added extra batteries to run a truck camper without killing my main battery and this works great. Simple to install and i have no had any problems in the pay few months and i use it every single day

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Reviewed in the United States on April 18, 2021

Verified Purchase

Amazon Customer

Grantham, US

★★★★★ 5

Installed in my RV.

This product works well. It is somewhat difficult to mount. The contact points are a little too close together. These deficiencies are understandable given its low cost and small size.

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Reviewed in the United States on January 18, 2021

Verified Purchase

Bret Jackson

Chelsea, US

★★★★★ 5

Best main wire for price

Size: 25 FT, Style: 0 (1/0) AWG RED

Good main wire and is accurate size and length

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Reviewed in the United States on May 18, 2026