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Low beams on with high beams

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=34596
Printed Date: May 15, 2025 at 9:33 PM


Topic: Low beams on with high beams

Posted By: mray
Subject: Low beams on with high beams
Date Posted: June 25, 2004 at 10:55 PM

I have 94 Caprice with dual filament bulbs-I am converting to four headlight system. Currently there is no relay setup for the headlights-it's all high current through the headlight switch. I am adding two relay's-one for low beams and one for high beams...I am using the high and low beam power wires from the headlight switch as the triggers for each relay. They are both positive switched--I attached a vm to each lead in the plug to the bulb and got positive voltage when the headlights were turned on and high beams activated. However, the low beams are shut off when the high beams are switched on-I want to change this with my new relay setup. How do I wire the relays so that lows stay on when high's are activated?

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71 Cheyenne ZZ502/400 LWB Chrome rallies...
66 Chevelle SS 427
98 C5 Corvette
1994 LT1 Caprice 9C1
2001 Suburban 8.1/496
02 VMAX



Replies:

Posted By: aidipf
Date Posted: July 06, 2004 at 12:06 PM

well, you want to hook this configuration up at the light switch. 

85 - ground

86- positive high beam wire when on

30- positive low beam wire when on

87- constant 12v

87a- no connection

hope this helps



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MR. INNOVATIONS



Posted By: bigbreaux1313
Date Posted: August 18, 2004 at 11:44 PM
i know this sounds stupid but thats one for each side right? Thanx

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Big"IN$ANE"Breaux



Posted By: aidipf
Date Posted: August 19, 2004 at 2:58 PM

no just hook 1 relay up at the switch wires



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MR. INNOVATIONS


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