For those who do their own wiring, knowing the load on the circuit is
essential.  Wire charts of AWG sizes versus current and length of wire are
available with various derating values.  Fuse the low beams separately so
you don't go dark if a fuse trips.

Pensionerd.

On Sun, Apr 10, 2011 at 6:22 AM, Dennis Haynes <d23haynes57@hotmail.com>wrote:

> So why would one bother with headlight relays and bulbs that size and still
> go through the fuse box? 400 watts is almost 40 amps. 10 gauge is the
> wiring
> requirement for this load. The wiring upgrade needs to be considered all
> the
> way from the alternator.
>
>