Does vacuum open or close the circuit? Will this work at a vacuum of 3 in?

Sorry,I have no idea.It makes it retard when starting and ideling and advance when driving.This part is for a harly davidson motorcycle.It does what it's suppose to do.Hubby thinks it opens the circuit.

Will this work on 1996 flstc

most of will the difference is in the length and ohms reading.It is e legal they are adjustable by removing the silicone plug.

Is this switch normally open or normally closed?

Not sure but if you apply vacuum to it it will switch from one to the other .

Standard Motor Products Voes Vacuum Operated Electrical Switch Mc Vos3

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Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

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$134.17

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Sold byAmazon USADelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

⚡ Tune your Harley with precision and power — don’t settle for less!

PROUDLY MADE IN THE USA - Support quality and craftsmanship with a product designed and manufactured domestically for superior standards.
COMPLETE INSTALLATION READY - Includes bracket, crimp terminals, and clear instructions—get your upgrade done hassle-free and fast.
TAILORED TUNING FLEXIBILITY - Self-assembly kits let you pick from preset calibration levels, giving you control over your bike’s exact performance needs.
PRECISION CALIBRATED PERFORMANCE - Every switch is 100% vacuum tested to guarantee flawless operation and reliability on your ride.
ADVANCED THERMOPLASTIC DURABILITY - Crafted from cutting-edge engineered thermoplastics for long-lasting resilience under all conditions.

The Standard Motor Products MC-VOS3 Vacuum Operated Electrical Switch is a precision-engineered, vacuum-calibrated component made from advanced thermoplastics. Designed for select Harley Davidson models from 1992-1995, it offers customizable calibration kits for tailored tuning, complete with installation hardware. This USA-made switch ensures reliable, long-lasting performance and easy installation, making it a must-have upgrade for discerning motorcycle enthusiasts.

Specifications

ASIN	B000WJFB6C
Best Sellers Rank	#411,431 in Automotive ( See Top 100 in Automotive ) #7 in Automotive Replacement Ported Vacuum Switches
Brand	Standard Motor Products
Brand Name	Standard Motor Products
Connector Type	Crimp
Control Type	Automatic
Customer Reviews	4.6 out of 5 stars 18 Reviews
Included Components	Standard Motor Products (VOES) Vacuum Operated Electrical Switch MC-VOS3
Item Dimensions	10 x 2 x 2 inches
Item Type Name	Ported Vacuum
Item Weight	0.1 Pounds
Item dimensions L x W x H	10 x 2 x 2 inches
Manufacturer	Standard Motor Products
Material	Thermoplastic
Material Type	Thermoplastic
Model	MCVOS3
Number of Items	1
Operation Mode	Vacuum
Part Number	275-01152
Switch Type	Vacuum Operated
UPC	091769544553
Unit Count	1 Count
Warranty Description	Limited Manufacturer

Reviews

H**N

Beautiful

Item came in today, I immediately installed item on my motorcycle and it was perfect fit. Now working wonderfully. Highly recommend.

17.05.2026

P**S

Voes

It's good product

13.06.2025

U**Z

Connections

The proper connections would have made it a plug and how ever I made it work.

5.05.2019

A**M

Very happy

Prompt service. Great product

5.10.2019

A**B

Find out the positive and negative wires....

Direct fit....

26.12.2019

A**R

Five Stars

Fixed my VOES woes.

15.08.2017

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TrustScore 4.5 | 7,300+ reviews

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$134.17

Duties & taxes included

In stock

Sold byAmazon USADelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to USA.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Suresh K.

Very impressed with the quality and fast delivery. Will shop here again.

4 days ago

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2 months ago

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Standard Motor Products (VOES) Vacuum Operated Electrical Switch MC-VOS3

Description

Specifications

Reviews

Common Questions