Marker Lamp Interupter Switch

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=142472
Printed Date: May 03, 2024 at 10:01 PM

Topic: Marker Lamp Interupter Switch

Posted By: rnewman81
Subject: Marker Lamp Interupter Switch
Date Posted: January 22, 2017 at 9:13 PM

Im trying to add a momentary on switch to my rig.
I want it so when lights are turned on the momentary switch turns them off
And when lights are off the momentary switch turns them on .
I had it all working with three relays wired together.
But some wires came loose and i dont know or remember whrre they went and cant find a diagram to show me ?any body know where i can get diagram

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Ryan newman

Replies:

Posted By: the12volt
Date Posted: January 22, 2017 at 9:20 PM

Latched On/Off Output Using a Single Momentary Negative Pulse - Positive Output https://www.the12volt.com/relays/relaydiagram23.html

I've drawn several more latched on/off diagrams here: https://www.the12volt.com/relays/relaydiagrams.asp

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Posted By: rnewman81
Date Posted: January 22, 2017 at 11:35 PM

Thank you

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Ryan newman

Posted By: rnewman81
Date Posted: January 23, 2017 at 2:18 PM

Here is pic of what i got can you help cuz diagram you sent me has 4 relays i only had three.

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Ryan newman

Posted By: the12volt
Date Posted: January 23, 2017 at 2:47 PM

I just looked over your diagram after saving it and rotating it. The way the coils of relay 2 and relay 3 are wired, I just don't see it doing anything.

My diagrams show 4 relays with a momentary switch that makes continuity when pressed and work as described. If I find the time, I'll attempt to accomplish the same thing with 3 relays and a different push button switch that interrupts continuity to ground rather than making continuity to ground.

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Posted By: davep.
Date Posted: April 10, 2017 at 3:22 PM

I've been chewing on this for months. I'd kind of like to do the same thing in my Super Duty. Here's what I came up with. 3 relays.

Relay 1 (Interrupt when ON)
#85 = N.O. terminal of push button switch (Other terminal of button switch to GROUND.)
#86 = Light switch (HOT with park or headlights)(Cut the wire for taillights at light switch. This is INPUT to the array).
#30 = To Lights. (Cut the wire for tail lights at light switch. This is the OUTPUT TO the lights)
87a = Relay 2, #30
#87 = Not used

Relay 2 (Mode. Lights off or on)
#85 = Ground
#86 = Light switch (HOT with park or headlights)(Cut the wire for taillights at light switch. This is INPUT to the array).
#30 = Relay 1, #87a
87a = Relay 3, #30
#87 = B+, Hot at all times. (Suggest using the same fused source as the TAIL lights use)

Relay 3 (Flash lights when OFF)
#85 = N.O. terminal of push button switch (Other terminal of button switch to GROUND.)
#86 = B+, Hot at all times. (Suggest using the same fused source as the TAIL lights use)
#87 = B+, Hot at all times. (Suggest using the same fused source as the TAIL lights use)
87a = Not used
#30 = Relay 2, #87a

The secret is Relay 2. With lights ON, this relay provides the power for the lights, and relay 1 interrupts it. With lights OFF, this relay is not energized and B+ from relay 3 is directed to the lights through 87a. With lights OFF, relay 1 will not energize with button push, so power from relay 2 is still sent to lights.

Draw it out. It works.