bmw power folding mirrors

Printed From: the12volt.com
Forum Name: Relays
Forum Discription: Relay Diagrams, SPDT Relays, SPST Relays, DPDT Relays, Latching Relays, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=102794
Printed Date: May 05, 2025 at 3:37 AM

Topic: bmw power folding mirrors

Posted By: lexizpumpin1
Subject: bmw power folding mirrors
Date Posted: March 04, 2008 at 10:29 PM

Ok this has been discusted a few times the mirrors have a blue wire and a white wire if you give blue + and white - they open if you reverse polarity they close they dont have a timer to stop them im loooking for a simple device that can use trigger to time open them then again with a different trigger close them also with time the trigger is +

let me know can pack tr-7 work?

Replies:

Posted By: Velocity Motors
Date Posted: March 05, 2008 at 9:19 AM

You can go here for the thread that explains how to do it.

-------------
Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA

Posted By: rob_fed
Date Posted: March 21, 2008 at 4:37 PM

Your idea to create a timed event or keeping the relay powered for a set amount of time would work. You can use a the delay circuit from the relay diagrams from this site. But I think the duration to open and close the mirrors is longer than the amount of energy that a capacitor can store, unless you have a big capacitor. You might have to use a 555 timer circuit to get the amount of on/off time you needed. Another thought, do power open/close mirrors have limit switches? If so, then you do not need a timed event. A power window circuit that provides one touch up and one touch down may be your answer.