Basic high beam/low beam headlamp question
BllFs6
I have a royally messed up headlamp system/wiring for an 82 amc spirit
The headlamp system is the large blocky seal beam system....with 4 headlamps
total....
Now the high beam pair of lamps is simple....it only has 2 prongs so it is
either off or on....
On the other hand the dual filament low/high beam bulb has me stumped....
It has three prongs and I am not sure which one is supposed to be ground, low
positive and high positive...
my GUESS is that the third prong off to the side is supposed to be the ground
and the two prongs opposite each other are high and low....
Now when I power up the headlamp THAT way i do get an obvious low(er) and
high(er) beam.....seems reasonable...
BUT the odd thing is if I just run power across the two OPPOSITE prongs rather
than nothing I get even a HIGHER (brighter) beam....
So I am thinking right that the prong off to the side is supposed to be ground?
BTW the headlamp is a H4656 (2A1) style headlamp....
THANKS for any pointer!
take care
Bll