Autometer Tach Adapter for Distributorless Ignitions

Autometer Tach Adapter for Distributorless Ignitions

Marsoni

M251S

$148.83

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

Autometer Tach Adapter for Distributorless IgnitionsAutoMeter 9117 RPM SIGNAL ADAPTER FOR DISTRIBUTORLESS IGNITIONS: 9117. Compatible with 1 12 cylinder engines; Measures 1. 5 x 3. 5 x 2; Environmentally sealed and vibration resistant for underhood mounting; Wire lengths: Gray (signal out) 52 , Black (ground) 24 , Red & Red Grn (Ign. Power in and out) 24 This fully potted, weatherproof module can be wired into the power supply of a coil per cylinder ignition system, where it senses current and creates

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This works well. It’s easy to install, charges your phone well, and mounts to the vent securely. Simply set your phone on it and squeeze the arms to grip it. I like that it’s manual, so you can open and close it even without power. However, the release button is centered on the back, which means that to press/squeeze it, you have to put your thumb right on the middle of your phone screen. It can interfere with whatever I’m using my phone for at the time or just wake it up unnecessarily. Not a huge deal, but it would be great if they moved the button to the side so you can squeeze side to side to release the grip, rather than front to back.

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Reviewed in the United States on September 22, 2025

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Thisisarealreview

Massapequa, US

★★★★★ 5

Great product if you’d like to talk and keep your phone charged at the same time

I really really like these. I have two one in my truck one in my car I like it because I can put my headphones in while it’s being charged so I can talk on long drives like four hour drives and the battery never goes dead and I have the ability to utilize the plug-in. I don’t like Wi-Fi. I have a tendency to lose them so I like old-fashioned wire it just is my preference.

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Reviewed in the United States on March 22, 2026

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Phoenix, US

★★★★★ 5

Muy buena calidad lo llevo usando por mucho tiempo y aún funciona.

Carga rápido y sostiene muy bien el celular

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Reviewed in the United States on May 13, 2026

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John P.

Lake Worth, US