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Need help wiring a relay to do this...

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=15719
Printed Date: May 27, 2022 at 5:02 PM


Topic: Need help wiring a relay to do this...

Posted By: BlackGti
Subject: Need help wiring a relay to do this...
Date Posted: July 01, 2003 at 12:06 PM

I have to wire up a relay to do the following in a car...


Some kid i know wants me to install city lights in his car..basically small Wedge bulbs in his headlight housings.

He wants them to come on with the park lights.but turn OFF as soon as he turns on the headlights. He doesnt want an external swithc. he just wants them to turn on with his light swithc and off when he flicks the headlights on.... Can someone tell me how to wire this up using a relay? Thanks!



Replies:

Posted By: xetmes
Date Posted: July 01, 2003 at 12:40 PM

Here is what i would do:

Parking light wire (+) -- Terminal 30

Headlight wire (+) -- Terminal 85

Ground (-) -- Terminal 86

Power to city lights (+) -- Terminal 87a

Terminal 87 -- No connection





Posted By: Mr.Swifty
Date Posted: July 04, 2003 at 4:11 PM

No relay needed here

The city light bulbs have 2 wires...one  pos and one neg

take one wire and hook it up to the parking light positive....take the other wire and hook it up to the headlight low beam positive......the lights will turn on with parking lights and turn off when the low beams are on....true they will turn back on when the high beams are on....but you will never notice them.






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