I installed an LED alternator warning light in my 1949 chevy 3100. I ran the warning light wire from the alternator to one side of the bulb and ran one from the ignition switch to the other side. Everything I have researched shows this to be correct. The problem I am having is the light stays on but it is dim. When I turn the key, the light is bright but then goes dim after the motor starts. i put a meter on the battery and it does jump from about 12.5 to 14.5 when started. I checked resistance to ground with the alternator warning light unplugged from the alternator and it checked out ok. I'm struggling with this one and would really like to put it behind me. Anyone have any ideas? It is a brand new alternator and a brand new battery.

Thanks
Corey

1949 chevy 3100
Scotts IFS
4-link rear
L-31 5.7l vortec