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(Topic ID: 23146)

Coin Door Switch Wiring

By jrolson

11 years ago

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5 posts
4 Pinsiders participating
Latest reply 11 years ago by robertmee
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Comet Williams, 1985

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#1 11 years ago

JRO

jrolson

Inactive member

Viborg, SD

11y 10,400 49 1

How should this coin door switch be wired up for my Williams Comet? I have 2 white wires and a black & red wire.

On the switch there's COM/ NC/ & NO options.

IMG_0406.JPG switch.jpg

3 weeks later

#2 11 years ago

MRZ

Mr-Zombie

Inactive member

Tampa, FL

11y 5,750 4 1

mine is just soldered to the two available connections.(of course it always starts in bookkeeping mode!) if you have it licked, let me know how!!! lol

#3 11 years ago

Chrisbee

Pinside member

11y 66,150 3,054 8

connect one the Common the other to NO.

#4 11 years ago

JRO

jrolson

Inactive member

Viborg, SD

11y 10,400 49 1

Got it figured out... Black is power which goes to COM.
Whites both connect to NO.

#5 11 years ago

robertmee

Pinside member

Raleigh, NC

12y 82,800 6,430 15 9

OP
Quoted from jrolson:
Got it figured out... Black is power which goes to COM.
Whites both connect to NO.

Wrong (although in reality doesn't really matter)

Look at page 21 of your schematics

The Black/Red wire is the memory protect signal back to the MPU...That goes on the NO

The white wires are grounds....They go on the COM

If you want to be accurate, that is

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