Help building countdown timer for automatic lock for Ram 1500

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Thread Starter


Joined May 27, 2015
I'm new to this forum. I'm familiar with basic, very basic circuits. I haven't messed with anything since basic electronics in college in the 90's.

So anyhow, I think this should be fairly simple but I'm not sure what I would need to do. I have a 2015 Ram 1500. I'd like to build a simple countdown timer (30 seconds or so) that whenever I ignition off in the truck, the timer is initiated, and after 30 seconds or 60 seconds, a 12v pulse is sent to the door locks.

The keyed hot wire is 12v, the door locks are 12v.

This is something that once built, I'd put it inside the dash or completely out of sight.


Joined Apr 24, 2011
Welcome to the forums (but your not gonna like this).

Sorry but this falls outside of the bounds of this forum. Automotive modifications are not discusseed here. Some nice moderator will come by shortly and close your thread.

Do come back with questions about other things electrical. (I suggest you not try to disguise this topic and ask again: the Mods are pretty sharp around here).


Joined Aug 23, 2012
Welcome to the AAC forum.

The owners of All About Circuits have elected not to host discussions of automotive electrical system modifications/enhancements due to safety concerns, the potential of legal ramifications and the possible circumvention of vehicle regulations at the state and federal level.

This thread is against the AAC forum rules, Chapter 6, as seen here:

6. Restricted topics. The following topics are regularly raised and however are considered “off-topic” at all times and will results in Your thread being closed without question:

  • Any kind of over-unity devices and systems
  • Automotive modifications
  • Devices designed to electrocute or shock another person
  • LEDs to mains
  • Phone jammers
  • Rail guns and high-energy projectile devices
  • Transformer-less power supplies
This can be found in our Terms of Service (ToS)

Automotive modifications of any kind are strictly forbidden. Therefore, this thread will be closed.

Please try to understand the reasons behind this action, and feel free to browse and use the forums.

You might find answers to your questions in one of these forums:

Another good forum that shares many of the same membership is . Good luck.
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