Help with trigging X-tra lights
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=44563
Printed Date: July 07, 2025 at 5:17 AM
Topic: Help with trigging X-tra lights
Posted By: pkaffe
Subject: Help with trigging X-tra lights
Date Posted: December 06, 2004 at 10:50 AM
Hi ! I was wondering if someone knows how to rig a couple of relays so that the lights come on like this: 1. When the parking lights go on the X-tralights will go on. 2. When the Low-Beam goes on the X-tra lights will go off. 3. When the High-Beam goes on the X-tra lights will go on The car in question is an Ford Probe - 94 Sec. Gen. The function for the lights today is as follows: 1. The parking lights goes on via a knob on a lever. 2. The Low-Beam goes on via the same lever, Parking lights are still on. 3. The High-Beam goes on by the same lever, X-tra lights goes on. Sincerely yours: Magnus
Replies:
Posted By: auex
Date Posted: December 06, 2004 at 10:49 PM
2 Relay diagram, can be done with one though.
Relay 1
85 ground, 86 +parking light, 30 +12V from output of relay 2(pin 87A), 87 +12 volt output to lights.
Relay 2
85 ground, 86 +low beam, 30 +12V, 87A output to 30 of relay 1.
This way the xtra lights will be on anytime that the parking lights are except when the low beams are active.
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Certified Security Specialist
Always check info with a digital multimeter.
I promise to be good.
Tell Darwin I sent you.
I've been sick lately, sorry I won't be on much.
Posted By: auex
Date Posted: December 07, 2004 at 4:44 PM
Up for clarification.
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Certified Security Specialist
Always check info with a digital multimeter.
I promise to be good.
Tell Darwin I sent you.
I've been sick lately, sorry I won't be on much.
Posted By: pkaffe
Date Posted: December 08, 2004 at 3:02 AM
Sounds straightforward to me... All I have to do is to run a cable to a switch in the panel so that I can turn the X-tra lights off when it's parked..... Thanks for the help... ;-)
Posted By: 194GVAN
Date Posted: January 19, 2005 at 9:12 PM
Good thing I found this topic, I was looking for a similar setup and this is my first time working with relays.
I also have a set of auxilary lights, I want to be able to turn on and off with a switch, but then have them turn off with the high beams so they can pass inspection. so, someone please correct me if I'm wrong, but this is how i figured i need to wire them.....
Relay 1
85 ground, 86 +power switch, 30 +12V from output of relay 2(pin 87A), 87 +12 volt output to lights.
Relay 2
85 ground, 86 +high beam, 30 +12V, 87A output to 30 of relay 1.
OR, like mentioned above i could have 86 on relay 1 run to the parking lights so i never forget to turn all my lights off, lol.
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Posted By: 194GVAN
Date Posted: January 19, 2005 at 9:22 PM
another quick question.....its my understanding that 85 and 86 can be used interchangeably as power or ground, respectively. the 1 relay that did come with my foglights has 85 to be the +signal and 86 to be the ground.
when you reverse the polarity like that on a relay, do 87 and 87a also swap functions? if thats the case i can just swap the 85 and 86 wires on the harness i have to make it easier on myself.
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Posted By: ff-mike
Date Posted: February 01, 2005 at 9:48 AM
194gvan
Nope. Reversing the flow through the coil portion has no effect on the current flow through the switching portion.
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