 relay for H4s?, I know this topic has been beat to death but.. |
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| Ben and Ralph |
 Oct 13 2014, 11:23 PM
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Ben  Group: Members Posts: 110 Joined: 8-July 10 From: Los Angeles Member No.: 11,917 Region Association: Southern California  |
So I know there are threads about H4s out there but I've gotten mixed answers from different people, so here it goes. Would I need to run separate relays for hella h4s like these
Someone told me that I should play it safe and get relays for them, Someone else said that the power is very close to the stock headlights and the switch should handle it, and a third someone told me to just run a thicker ground wire. Called Pelican and they are 55/60 watt. If I would need to run new relays, who sells a kit that I could purchase? |
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| SirAndy |
Oct 14 2014, 10:50 AM
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Resident German Group: Admin Posts: 41,675 Joined: 21-January 03 From: Oakland, Kalifornia Member No.: 179 Region Association: Northern California |
H4 relays should be readily available from your local FLAPS, at least they were when i bought mine some 10 years ago.
Do *not* run H4 lights without relays! (IMG:style_emoticons/default/popcorn[1].gif) |
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| Mark Henry |
Oct 14 2014, 11:35 AM
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that's what I do! Group: Members Posts: 20,065 Joined: 27-December 02 From: Port Hope, Ontario Member No.: 26 Region Association: Canada |
QUOTE(SirAndy @ Oct 14 2014, 12:50 PM)  H4 relays should be readily available from your local FLAPS, at least they were when i bought mine some 10 years ago. Do *not* run H4 lights without relays! (IMG:style_emoticons/default/popcorn[1].gif) Doesn't the stock circuit already have relays? (IMG:style_emoticons/default/confused24.gif) |
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| Dave_Darling |
Oct 14 2014, 04:02 PM
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914 Idiot Group: Members Posts: 14,991 Joined: 9-January 03 From: Silicon Valley / Kailua-Kona Member No.: 121 Region Association: Northern California 
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QUOTE(Mark Henry @ Oct 14 2014, 10:35 AM) It has one--the high/low relay. But all of the power to the relay comes through the ignition switch and I think the light switch also. Asking those switches to carry more power is not a recipe for a long and happy life for them. You can run H4s without extra relays. I've done so for 20 years. They are low-powered H4 bulbs, though. And they would be brighter, and the other electrical bits would be happier and less stressed, if I ran relays like the ones shown in the diagram above. Running even the lower-powered ones is still quite sub-optimal. I would not try it at all with the higher-powered bulbs. --DD |
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| Phoenix914 |
Oct 16 2014, 07:11 AM
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Member Group: Members Posts: 389 Joined: 6-December 06 From: Oviedo, FL Member No.: 7,322 Region Association: South East States
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QUOTE(Dave_Darling @ Oct 14 2014, 06:02 PM) QUOTE(Mark Henry @ Oct 14 2014, 10:35 AM) It has one--the high/low relay. But all of the power to the relay comes through the ignition switch and I think the light switch also. Asking those switches to carry more power is not a recipe for a long and happy life for them. You can run H4s without extra relays. I've done so for 20 years. They are low-powered H4 bulbs, though. And they would be brighter, and the other electrical bits would be happier and less stressed, if I ran relays like the ones shown in the diagram above. Running even the lower-powered ones is still quite sub-optimal. I would not try it at all with the higher-powered bulbs. --DD Dave, your statement about power to the headlight relay coming through the ignition switch got me thinking. My headlights haven't been switching between high and low, and I just realized my ignition switch is bad (electric part). Could the headlight switching problem be related to the ignition switch? I have a new ignition switch, but haven't installed it yet. Maybe I will by the weekend and the question will be answered anyway. |
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Posts in this topic
Ben and Ralph relay for H4s? Oct 13 2014, 11:23 PM
Ben and Ralph
So I know there are threads about H4s out there b... Oct 13 2014, 11:30 PM Luke M If I would need to run new relays, who sells a kit... Oct 14 2014, 09:58 AM
Johny Blackstain
Doesn't the stock circuit already have relays... Oct 14 2014, 11:38 AM SirAndy Doesn't the stock circuit already have relays?... Oct 14 2014, 12:47 PM
Dave_Darling My headlights haven't been switching between ... Oct 16 2014, 10:51 AM Phoenix914
Probably not, if the lights are on but just not ... Oct 16 2014, 11:28 AM Java2570 I had always heard that the relays and heavy duty ... Oct 14 2014, 12:52 PM Ben and Ralph
I had always heard that the relays and heavy duty... Oct 14 2014, 03:50 PM michael7810 Has anyone tried Nighthawks? I guess they would b... Oct 14 2014, 06:43 PM phatnine11 http://www.ebay.com/itm/CERAMIC-H4-HEADLIG...7-/33... Oct 14 2014, 08:16 PM lonewolfe
http://www.ebay.com/itm/CERAMIC-H4-HEADLIG...7-/3... Oct 15 2014, 10:11 PM tnsmike I am running hella lenses with piaa xtreme white b... Oct 15 2014, 10:40 PM |
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