1 or 2 relays?

Discussion in 'General Electronics Chat' started by Jan Rune, Mar 8, 2014.

Thread Status:
Not open for further replies.
  1. Jan Rune

    Thread Starter Member

    Apr 22, 2008
    Im gonna make my folding mirrors unfold/fold when unlocking/locking doors. I will get my coil(s) feed from the door lock that open/close with reversed polarity.

    Will it work to with 1 relay(schematic 1) or do i need to use two relays with flyback diodes? The door lock controller probably have this protection to it is my guess. Any other pitfalls here?

    The mirror fold ECU only needs a ground connection to fold or unfold the mirrors.

    Thank you

    1 relay

    2 relay
    Last edited: Mar 8, 2014
  2. Alec_t

    AAC Fanatic!

    Sep 17, 2013
    Vehicle mods are contrary to the Terms of Service of this site. Don't be surprised if the moderators close this thread :(
  3. bertus


    Apr 5, 2008

    I am closing this thread as it violates AAC policy and/or safety issues.

    6. Restricted topics.

    The following topics are regularly raised 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 comes from our Tos:
    Terms of Service
    There will be enough sites where automotive questions can be discussed :
    Member selected automotive forums

Thread Status:
Not open for further replies.