Headlight relay - The 1947 - Present Chevrolet & GMC Truck Message Board Network

72-CH · 03-31-2021, 06:51 PM

Does anyone know where I can find the original style headlight relay or know the AC Delco/ Delco Remy part number? It's on a 72.

Thanks,

**HO455** · 03-31-2021, 07:45 PM

Do you mean the high/low beam foot switch?
There is no headlight relay from the factory.

PS Welcome aboard!

72-CH · 03-31-2021, 08:35 PM

This is the part I was referring to.

**dmjlambert** · 03-31-2021, 08:53 PM

That is the voltage regulator for the charging system. There is some recent discussion including adjustment and quality of replacements here http://67-72chevytrucks.com/vboard/s...d.php?t=820074. It's possible to clean it up and paint it and restore the interior by burnishing the contacts and adjusting.

firedemon · 03-31-2021, 09:02 PM

thats definitely the voltage regulator what problem are you having that you thought you need to change a headlight relay

72-CH · 03-31-2021, 11:19 PM

Thanks for all the replies, not having a problem with lights, just doing some clean up under the hood.

**'68OrangeSunshine** · 04-01-2021, 06:22 PM

Quote:

Originally Posted by 72-CH

Thanks for all the replies, not having a problem with lights, just doing some clean up under the hood.

Use a wirebrush on the outside and spraypaint your Voltage Regulator in satin black. If it works well -- charges battery and limits alternator overrun -- then don't mess with the internals. They were built to be adjustable, but without the proper set up and knowledge, it's too easy to mess it up. New replacement VRs are junk. Keep the old one if it works.

firedemon · 04-01-2021, 09:10 PM

glad everything is working but you can get rid of the regulator by going with a more modern alternator if you really wanted it clean

**Already Gone** · 04-02-2021, 02:32 PM

I bought a new voltage regulator, from Napa, and and swapped the cases and reinstall on truck. Just trying to keep the truck looking natural.

03-31-2021, 06:51 PM	#1
72-CH Registered User Join Date: Aug 2020 Location: Frisco TX. Posts: 21	Headlight relay Does anyone know where I can find the original style headlight relay or know the AC Delco/ Delco Remy part number? It's on a 72. Thanks,

03-31-2021, 07:45 PM	#2
HO455 Post Whore Join Date: Feb 2016 Location: Portland Oregon Posts: 10,890	Re: Headlight relay Do you mean the high/low beam foot switch? There is no headlight relay from the factory. PS Welcome aboard! __________________ Thanks to Bob and Jeanie and everyone else at Superior Performance for all their great help. RIP Bob Parks. 1967 Burban (the WMB),1988 S10 Blazer (the Stink10 II),1969 GTO (the Goat), 1970 Javelin, 1952 F2 Ford OHC six 4X4, 29 Model A, 72 Firebird (the DBP Bird). 85 Alfa Romeo If it breaks I didn't want it in the first place The WMB repair thread http://67-72chevytrucks.com/vboard/s...d.php?t=698377

03-31-2021, 08:35 PM	#3
72-CH Registered User Join Date: Aug 2020 Location: Frisco TX. Posts: 21	Re: Headlight relay This is the part I was referring to. Attached Images

03-31-2021, 08:53 PM	#4
dmjlambert Senior Member Join Date: Apr 2016 Location: Cypress, TX Posts: 3,584	Re: Headlight relay That is the voltage regulator for the charging system. There is some recent discussion including adjustment and quality of replacements here http://67-72chevytrucks.com/vboard/s...d.php?t=820074. It's possible to clean it up and paint it and restore the interior by burnishing the contacts and adjusting.

03-31-2021, 09:02 PM	#5
firedemon Registered User Join Date: Jun 2015 Location: @ Posts: 890	Re: Headlight relay thats definitely the voltage regulator what problem are you having that you thought you need to change a headlight relay

03-31-2021, 11:19 PM	#6
72-CH Registered User Join Date: Aug 2020 Location: Frisco TX. Posts: 21	Re: Headlight relay Thanks for all the replies, not having a problem with lights, just doing some clean up under the hood.

04-01-2021, 09:10 PM	#8
firedemon Registered User Join Date: Jun 2015 Location: @ Posts: 890	Re: Headlight relay glad everything is working but you can get rid of the regulator by going with a more modern alternator if you really wanted it clean

04-02-2021, 02:32 PM	#9
Already Gone 70+ ( Old Skool Club ) Join Date: Nov 2003 Location: Saskatoon, Saskatchewan ,Canada Posts: 9,080	Re: Headlight relay I bought a new voltage regulator, from Napa, and and swapped the cases and reinstall on truck. Just trying to keep the truck looking natural. __________________ 1972 C10 Custom/Deluxe 613 Highlander 406/700R4 1999 White Tahoe LS 4x2 with Z56 Police Package 1992 K1500 GMC Suburban Members I have personally met: MusicMan70 - HeavyD - ChewyChevy67 - StingRay -71SWB4x4 - 67 Burb - DeadheadNM - too much stuff - bc65 - das601 " Circumsatances Do Not Change Responsibility " " The Sky is not the Limit, Your Mind is." Marilyn Monroe .. RIP Charlie Watts 1941 - 2021



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