What is a switched power source?
What is a switched power source?
A switched-mode power supply (switching-mode power supply, switch-mode power supply, switched power supply, SMPS, or switcher) is an electronic power supply that incorporates a switching regulator to convert electrical power efficiently.
How to install switched accessory power to your?
The line to the relay is now in place and ready to meet the soldering iron. With the relay loosely placed in position, cut the switched power lead (86) to a length just a bit longer than what is required to reach the splice. Strip two-thirds of an inch from the wire end.
What to do when you find a switched power source?
When you think you’ve found your switched power source, verify it. Remove the fuse, and using a voltmeter, check to see which side of the fuse is the hot side.
How can I find the 12 volt source in my car?
head-unit To find the accessory source, start by ensuring that the ignition switch is in the “off” position. Insert the positive probe in any connection (except the constant 12v source). With the ignition switch in the off position, you should not read any voltage on the multi-meter. The next step will be to turn the key to the accessory position.
Why does the voltage drop when the key is in the Accessory position?
If the voltage drops to zero when in the accessory position, then back to 12v when the key is in the ignition position, you have found the ignition source. If you do not read 12v (approx.) on the multi-meter when the key is in the ignition (on) position, this indicates that you must have selected either the the cranking source.
When you think you’ve found your switched power source, verify it. Remove the fuse, and using a voltmeter, check to see which side of the fuse is the hot side.
The line to the relay is now in place and ready to meet the soldering iron. With the relay loosely placed in position, cut the switched power lead (86) to a length just a bit longer than what is required to reach the splice. Strip two-thirds of an inch from the wire end.
head-unit To find the accessory source, start by ensuring that the ignition switch is in the “off” position. Insert the positive probe in any connection (except the constant 12v source). With the ignition switch in the off position, you should not read any voltage on the multi-meter. The next step will be to turn the key to the accessory position.
How do you find the accessory voltage in a car?
To find the accessory source, start by ensuring that the ignition switch is in the “off” position. Insert the positive probe in any connection (except the constant 12v source). With the ignition switch in the off position, you should not read any voltage on the multi-meter. The next step will be to turn the key to the accessory position.
