cleaning/retensioning connections and belt. Symptom now is:

Light on bright at key on but when alternator begins turning, light remains on about half brilliance. This symptom is temperature sensitive as the warmer the temperature(or engine compartment temp) the more the light extinguishes.
I have a new regulator to be installed later today. If that fixes the trouble, I still will not understand it. Any comments?

Thanks in advance,

ps, where do I go to add my home location to the msg board?

__________________
Jim

'49 170?(donated to church in Darmstadt '58)
'58 220S(crusher, after '73 fire[San Antonio])
'72 280SE 4.5
'77 240D
'81 300SD
'83 240D parts car