Car Relay Circuit: Switch, Coil and Window Motor

A dashboard switch on its own 5 A fuse sends 149 mA through a car relay coil; the relay switches 7.9 A to a window motor on a 15 A fuse.

What's inside

1× Battery
1× Switch
1× Relay
2× Fuse
1× DC Motor
Measured with Voltmeter/Ammeter

Tags

DC Motor Voltmeter/Ammeter Relay Fuse Battery Switch

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By Samir Sabri
Saved November 09, 2026
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Tags: DC Motor Voltmeter/Ammeter Relay Fuse Battery Switch