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Rear Turn/Brake Lights Switcher Circuits


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kellogs 
Member - Posts: 3
Member spacespace
Joined: August 17, 2021
Location: West Virginia, United States
Posted: August 17, 2021 at 3:31 AM / IP Logged Link to Post Post Reply Quote kellogs
Hello,
has anyone met with a low side switch for the lights in the title ? How common are these for domestic US vehicles ?
Low side switches will make/break the ground connection as opposed to a high side switch which makes or brakes the 12 V connection.
audiokid1 
Copper - Posts: 124
Copper spacespace
Joined: March 17, 2003
Location: United States
Posted: August 17, 2021 at 8:08 AM / IP Logged Link to Post Post Reply Quote audiokid1
What are you trying to accomplish? Are you working with a specific product and vehicle? High Level switchers are most common because people are usually tagging the wires in the back of the vehicle where the signal is 12V rather than ground like it would be at the BCM or multifunction switch. Brake is usually 12V no matter where you tag it on the vehicle.
kellogs 
Member - Posts: 3
Member spacespace
Joined: August 17, 2021
Location: West Virginia, United States
Posted: August 22, 2021 at 6:32 AM / IP Logged Link to Post Post Reply Quote kellogs
Ok, thanks. Just trying to figure out whether I should make two designs or just one for my gadget - which should be generic enough to work with all or most cars.
audiokid1 
Copper - Posts: 124
Copper spacespace
Joined: March 17, 2003
Location: United States
Posted: August 22, 2021 at 9:03 AM / IP Logged Link to Post Post Reply Quote audiokid1
If you don't mind sharing I'd be interested in hearing more about what you are working on.
A few other things with the tail lamp circuits that you'll have to factor in are whether the circuits are PWM or not and if the tail lamps are incandescent or LED.
kellogs 
Member - Posts: 3
Member spacespace
Joined: August 17, 2021
Location: West Virginia, United States
Posted: August 23, 2021 at 3:18 PM / IP Logged Link to Post Post Reply Quote kellogs
Got it!
AS this is an idea for a commercial project that I am working on... sorry, not much more that I see fit to share.
Thanks
audiokid1 
Copper - Posts: 124
Copper spacespace
Joined: March 17, 2003
Location: United States
Posted: August 23, 2021 at 3:35 PM / IP Logged Link to Post Post Reply Quote audiokid1
I see, do you work for a manufacturer?
I have a few ideas on where this information could take you...especially for a commercial project.

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