relay for H4s?, I know this topic has been beat to death but.. |
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relay for H4s?, I know this topic has been beat to death but.. |
Ben and Ralph |
Oct 13 2014, 11:23 PM
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#1
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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? |
SirAndy |
Oct 14 2014, 10:50 AM
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#2
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Resident German Group: Admin Posts: 41,676 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) |
Mark Henry |
Oct 14 2014, 11:35 AM
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#3
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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 |
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) |
Dave_Darling |
Oct 14 2014, 04:02 PM
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#4
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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 |
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 |
Phoenix914 |
Oct 16 2014, 07:11 AM
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#5
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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 |
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. |
Dave_Darling |
Oct 16 2014, 10:51 AM
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#6
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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 |
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? Probably not, if the lights are on but just not switching between high and low. The suspects in that case are the high/low switch in the turn signal stalk, and the high/low relay on top of the fuse panel. --DD |
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