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Many If This and If This Then Do That, Except When This. Relay

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=147113
Printed Date: April 28, 2024 at 10:08 PM


Topic: Many If This and If This Then Do That, Except When This. Relay

Posted By: dk2only
Subject: Many If This and If This Then Do That, Except When This. Relay
Date Posted: November 04, 2021 at 11:12 PM

I am connecting a headlight from one trim to another trim.
Trim A vehicle is going to have a Trim B headlight.

Vehicle A Outputs Are:
--AUTO Daytime--
DRL Function = Dimmed LED low beam projector.
7443 Running Light = OFF
194 Corner Lights = OFF
7443 Blinker blinks normally not affecting low beam DRL.

--AUTO Nighttime--
DRL = Off
LED Low Beam Projector = On
7443 Running Light = ON
194 Corner Lights = On
7443 Blinker blinks normally not affecting Running Light.

Trim B Headlight Needs:
--AUTO Daytime--
LED DRL ARRAY = ON (Full Power to LED Array on the headlight.)
LED Low Beam Projector = OFF
LED Corner Lights = OFF
LED White Running Lights = OFF
Blinker Turns off DRL during blinking on that lamp, then DRL turns back on after blinker stops blinking.

--AUTO Nighttime--
DRL LED Array = OFF
LED Low Beam Projector = ON
LED Corner Lights = ON
White LED Running Lights = ON
Blinker turns off white running lights during blinking on that lamp, then Running Lights turn back on after blinker stops blinking.

I have looked at the relays and I am stumped at what all I need here.

I have gathered so far:
If low=on + corner=on then low=on & drl=off.
If low=on + corner=off then low=off & drl=on.

Vehicle Trim A:
Headlight Switch (Auto) = Dimmed output of LED Lowbeam projector. All Other Lights are off.
Headlight Switch (Marker) = Dimmed output of LED Lowbeam projector, 194 Corner & 7443 Marker lights are on.
Headlight Switch (Lights) = Full output of LED Lowbeam projector, 194 Corner & 7443 Marker lights are on.
Headlight Switch (DRL Off) = Everything Off
{Signal On = 7443 Signal Flashes}

Vehicle Trim B:
Headlight Switch (Auto) = DRL LED Array Full Brightness. All Other Lights are off.
Headlight Switch (Marker) = LED Corner & White LED Running Lights are on. LED Low Beam Projector Off. DRL LED Array Off.
Headlight Switch (Lights) = DRL LED Array Off. LED Low Beam Projector, LED Corner & White LED Running Lights are on.
Headlight Switch (DRL Off) = Everything Off
{Signal On (During DRL=ON) = LED Signal Flashes. DRL LED Array Lights are off during signaling.}
{Signal On (During DRL=OFF) = LED Signal Flashes. White LED Running Lights are off during signaling.}

Trim B Headlight:
With (+) to white running light, it turns on.
With (+) to both white led running lights and (+) to the LED signal, both white running lights and signal are on.
BUT
Putting (+) to the DRL array and (+) to the LED signal, DRL Array turns off when signal turns on.

What relays, or series of other things would I need to put Trim B headlight on Trim A vehicle?

If there are any Relay gurus out there that sees a better way to accomplish the above, I am open to suggestions.

Thank you in advance.






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