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Dash Cam on/Off From Negative Trigger


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terbie1 
Member - Posts: 3
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Joined: April†30, 2018
Location: California, United States
Posted: May†01, 2018 at 3:17 PM / IP Logged Link to Post Post Reply Quote terbie1
Hello folks,
I recently installed an Evo one remote start unit on my 2016 Tundra. I also installed a dash cam. I have the dash cam wired directly from the battery with a regular on/off switch right now. I am hoping that I could use the negative trunk trigger from the Evo one to also be able to turn the dash cam on/off. What would I need to add to this circuit to be able to do this? Basically push trunk button on fob once for dash cam on and push it again to turn it off.
Any info. would be greatly appreciated.
Thanks
Terbie1
wirewise 
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Posted: May†01, 2018 at 8:56 PM / IP Logged Link to Post Post Reply Quote wirewise
Relay Diagrams: Latched On/Off Output Using a Single Momentary Negative Pulse - Positive Output
~wirewise~ Verify all wiring with your meter before making any connections!
terbie1 
Member - Posts: 3
Member spacespace
Joined: April†30, 2018
Location: California, United States
Posted: May†02, 2018 at 1:11 PM / IP Logged Link to Post Post Reply Quote terbie1
Awesome, thank you so much Wirewise!!!
Terbie1
terbie1 
Member - Posts: 3
Member spacespace
Joined: April†30, 2018
Location: California, United States
Posted: May†29, 2018 at 8:01 PM / IP Logged Link to Post Post Reply Quote terbie1
Thanks for the help!! I went with the 4 relay option with the diodes and it is working beautifully on bench testing. Only thing iím curious about is that if it is normal to have a constant 12v on the green wire coming off pin 30 to the switch?
Terbie1
the12volt 
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Posted: May†29, 2018 at 8:21 PM / IP Logged Link to Post Post Reply Quote the12volt
If you used the diagram that wirewise linked to above, it is. The voltage is coming across the coil of the first or fourth relay depending on the latch. You can add diodes across the coils of the first and fourth relays if you like.
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