Running highs and lows in H4 Eurolights

[Mark L. Chang]

On Mon, 4 Dec 2000, Thomas, Tom wrote:

> What kind of problems would I be looking at if I wired a jumper from the
> high beam relay to the low (with a diode to prevent back flow) so both ran
> on high beam?  The only issues I can think of would be heat dissipation and
> light scatter?  Any comments would be appreciated.  

Spot on. The single bulb, dual-filament H4 was not designed to run both
filaments simultaneously, IMHO. Everything I've heard/read has told me
that it's just too much heat _for the bulb_, not for the lens assembly,
obviously.

But, for the $5-$10 that the bulb costs, if you really want to, give it a
try and see how long it lasts. Of course, please be kind to oncoming
traffic! It would be interesting to compare "low-output" 55/65w lights
with "high-output" 80/100w lights in this manner.

--
                               Windows NT crashed.
                               I am the Blue Screen of Death.
                               No one hears your screams.
                               -- Peter Rothman