H4 Pin configuration?

[Huw Powell]

> Is low-beam ground separate from high-beam ground?

no

> 
> Looking at the plug on an H4 harness, which would be low-beam,
> high-beam and ground?

looking from the *rear*...

> 
> 
>     (2) _
> (1) [        ] (3)
> 
> 
> 1. Ground ,
> 2. Low-beam &
> 3. High-beam?

correct.  right=white=high... iy-iy-iy :-)

> 
> I get ~2.4-volts between pins 1 & 2 on the
> harness.....hmmmmmmmm.............
> >11-volts between 1 & 3, w/ high-beams switched on.
> Sound at all familiar?

I think we know why your lows aren't working at least.  only 2.4 volts! 
relay bad?  ground shouldn't be an issue since you are getting 11v on
high - are these voltages with the lights connected or open circuit?

-- 
Huw Powell

http://www.humanspeakers.com

http://www.humanthoughts.org