Re: Alternator light

[Christian Stanton <cstanton@pixley.com>]

Remember the alternator is meant to show both undercharging (dead alternator) 
and overcharging (faulty voltage reg).  Won't adding a diode into the circuit 
defeat this?

I would be sure that what you are seeing at the alternator light is leaking 
diodes in the alternator and not corrosion (not with Lucas surely!) in the 
alternator control circut.

Perhaps I am all wet here, but I had this happen to me on an older SAAB with a 
Bosch alternator with external voltage reg.  The wiring in the primary circuit 
started to corrode and the alternator was overcharging, luckily (because of the 
alternator light). I caught it as it melted the fuse/relay panel down and 
before it caused a fire.