The Ford Barn

50droptop · 08-06-2018, 04:43 PM

I see where vintage auto garage lists horn and headlight relays for 1936 12V conversions. Are these really necessary? I’ve got resistors in my horns to drop the voltage and the headlights are 12V halogen conversions (it’s going to be a driver). Seems the headlight switch could handle the current since it’s less with 12V than 6V. So do I need to install relays?

19Fordy · 08-06-2018, 05:32 PM

Technically you don't. However, it sure takes the load off your headlight switch. I hooked the relay to my dimmer switch.

FlatheadTed · 08-06-2018, 05:34 PM

I think I would because you be runn it through that vintage fuse under the dash .the switch could handle it

Vintage Copper 47 · 08-06-2018, 05:56 PM

Quote:

Originally Posted by 19Fordy

Technically you don't. However, it sure takes the load off your headlight switch. I hooked the relay to my dimmer switch.

When I did the 12 volt conversion on my 47, I installed headlight relays.. Glad I did, no stress, no mess..

50droptop · 08-06-2018, 08:43 PM

Thanks guys!

dumb person · 08-07-2018, 07:49 AM

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LEDs use less current than halogens and can be bought in brighter config's.

08-06-2018, 04:43 PM	#1
50droptop Senior Member Join Date: Oct 2016 Posts: 250	Is this necessary for 12V conversion? I see where vintage auto garage lists horn and headlight relays for 1936 12V conversions. Are these really necessary? I’ve got resistors in my horns to drop the voltage and the headlights are 12V halogen conversions (it’s going to be a driver). Seems the headlight switch could handle the current since it’s less with 12V than 6V. So do I need to install relays?

08-06-2018, 05:32 PM	#2
19Fordy Senior Member Join Date: May 2010 Location: Coral Springs FL Posts: 10,951	Re: Is this necessary for 12V conversion? Technically you don't. However, it sure takes the load off your headlight switch. I hooked the relay to my dimmer switch.

08-06-2018, 05:34 PM	#3
FlatheadTed Senior Member Join Date: May 2010 Location: Auckland Posts: 4,705	Re: Is this necessary for 12V conversion? I think I would because you be runn it through that vintage fuse under the dash .the switch could handle it __________________ http://www.flatheadted.com Flathead Ted brake Floaters ,

08-06-2018, 08:43 PM	#5
50droptop Senior Member Join Date: Oct 2016 Posts: 250	Re: Is this necessary for 12V conversion? Thanks guys!

08-07-2018, 07:49 AM	#6
dumb person Senior Member Join Date: Apr 2011 Location: South pacific island Posts: 1,724	Re: Is this necessary for 12V conversion? Sponsored Links (Register now to hide all advertisements) LEDs use less current than halogens and can be bought in brighter config's. __________________ <Link> This is how we roll<Link> "I'm Convinced that no one really reads posts anymore; they just fabricate what they think the post says then ramble on about red herrings."--Bob Outcasts rules of old cars #1 Fun is imperative, mainstream is overrated #2 If they think it is impossible, prove them wrong #3 If the science says it impossible you are not being creative enough. #4 No shame in recreating something you never had #5 If it were not for the law & physics you would be unstoppable