Diode installation for flashing lights

Printed From: the12volt.com
Forum Name: Car Security and Convenience
Forum Discription: Car Alarms, Keyless Entries, Remote Starters, Immobilizer Bypasses, Sensors, Door Locks, Window Modules, Heated Mirrors, Heated Seats, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=29090
Printed Date: May 17, 2025 at 7:33 PM

Topic: Diode installation for flashing lights

Posted By: nicklk
Subject: Diode installation for flashing lights
Date Posted: March 26, 2004 at 10:41 PM

Hey, I am wanting my bright headlights along with my parking lights to flash when I arm and disarm my alamr (prestige) but I need to install diodes to make the brights not turn on when I place the brake.

Now the question, where int he circuit do I install the diode?? Do I split the signal wire from the alarm, one with a diode to the parking lights, and the other with a diode to the bright headlights?? Is this done on a circuit board, or can I just put a diode inline on the wires??

Thanks

nick

Replies:

Posted By: bmf1000d
Date Posted: March 26, 2004 at 10:51 PM

YEs split them and yes you can put them in line but you would have to wire a relay to supply the power for the lights

-------------
"Big" Mike
Double Take
Fremont, Ne
remember to check all your wires with a dmm not a test light!!
i take no responsibilty whatsoever for the vailidty of the info nor consequences thereof

Posted By: its_radio_shop
Date Posted: March 26, 2004 at 11:26 PM

Make sure you get the polarity correct. High beams on a vehicle can be positive or negative switched while the park lights are the same or opposite. Add relays etc. as needed to get correct polarity.

Posted By: nicklk
Date Posted: March 27, 2004 at 12:18 AM

Alright, so......

I have a relay switched to the high beams, and a diode placed from the alarm to the parking lights....do I place the other diode for the headlights before or after the relay??

Posted By: its_radio_shop
Date Posted: March 27, 2004 at 4:05 PM

If the output from the alarm connects to the relay and then goes from there through a diode then connects to the park lights, you shouldnt need anything else. As long as the diode is in the line after the relay you should only need the one. It will keep the relay from being energized when you use the OEM switch to turn on the park lights.

Posted By: nicklk
Date Posted: March 27, 2004 at 8:53 PM

What model of diode would you guys suggest using?? I got a 12V diode last night and nothing is working, so I went ahead and bought some 1N4003, 1N4004, AND 1N4005's, what one should I use??

Thanks