<VV> VV H4 lights

[Mike Kost]

JVHRoberts@aol.com wrote:

>OK, a few things here:
>What you got here is the circuit breaker in the headlight switch opening from 
>the added load. The H4 high beams quite a bit more power, compared to 37.5 
>for the stock sealed beams. 
>H4s usually have different wattage high to low beams. Check this. 
>Also, the recommended high beam is an H1 high beam only.
>What do you mean HID style? I hope you don't mean those funky blue or purple 
>colored bulbs. I might have to shoot you. <G>
>The solution? You'll need to add relays for the high beams. It would do you 
>well to do this for the low beams, as you'll pick up quite a bit of brightness 
>just by lowering the resistance going to the bulbs. I recommend adding an 8 
>gage wire all the way back to the battery to feed these relays. Sure, it's work, 
>but the results are amazing!
>
>John
>
And don't forget to put a proper size fuse or breaker (prefer a breaker) 
in the hi current circuit to protect the car. If these bulbs are 90 watt 
on high beam, that is 360 watts when the high beams are on which is 30 
amps at 12 volts (more if the voltage is lower).  

>
>
>In a message dated 3/28/2004 11:47:16 PM Eastern Standard Time, 
>jncmiller@mchsi.com writes:
>I just installed (4) H4 90w hi/low beam bulbs (HID style, but not true HID)
>in a LM coupe I am working on. The wiring is original but good condition.
>Continuity checks out fine in all directions. H4's have three tabs like on all
>older hi/low beam lights. To use these on hi beam only I bent away the third
>tab.
>  All went fine, hi/low worked as it should, until I plugged in the fourth
>bulb. After about 30 seconds all four headlights, high beam indicator, and
>taillights start flashing like an ambulance on its way to a 10 car pileup.
>  I disconnect one headlight and all is normal again. I reinstall the regular
>halogen sealed beams it works properly again. I checked the wiring and nothing
>is getting hot. It almost acts like some kind of RF interference buildup but I
>am unaware of this being able to affect this type of electronics.
>  Any ideas out there? No lights going off or coming on in my head right now.
>I'm open to suggestions.
>

-- 
Mike Kost
Show-Me Corvair Club