Re: TQC Euro Light Install Q's

["Michael J. Oehler" <mjo@ai.net>]

When I switched to H4 bulbs, I had a similar problem.
The current is flowing through both filaments before grounding.
Thus, the resistance is higher and the light dimmer. 
This is what happened in my case:

              ^                 ^
low    o-----/ \ /------+------/ \ /------o Ground
beam            v       |         v
                        |
                        o
                   high beam

o = Connection point to the H4 lamp
The funny squiggle is suppose to be the filament.

You can easily see that the "high beam" connection needs to be
switched with the "Ground."

Most Hella kits come with an adaptor kit to do this.
If you don't have an adaptor, you will have to push the lead
out and switch them yourself.

Remember, remote relays are only needed when the wattage exceeds
the current capacity of the circuit. This can be determined with:

                 Power = Current * Voltage
For example, a 60Watt bulb will draw 5Amps of current.
60W = 5A * 12V

My '83 Coupe has 4 fuses, one for each lamp. Each fuse is 10A.
In theory, I could put 4 120W bulbs up front ;-)
However, make sure your total demand is less then the output
of the alternator and the overall capacity of the electrical
junction box! And always give yourself a little extra "Amps".
Ever is the movie Apollo 13?

:-)
If you want further taunting  basic in electrical engineering, ... 
:-)
-Mike
mjo@ai.net
'83 Coupe & '81 VW Truck