Posted by Don Williams on Wednesday, February 14, 2001 at 8:54PM :
In Reply to: Lights dim on idle posted by Giles on Tuesday, February 13, 2001 at 9:46AM :
I have a '73 PW that did the same thing for several years before I finally found the source of the problem. I tried all kinds of batteries, alternators, voltage regulators, etc. but none of those things made any difference. I even checked for a voltage drop between the battery and the headlights but everything seemed fine. Then one day the electrical system went completely dead. The problem turned out to be a corroded wire connection at the firewall bulkhead connector. There are several wires in that connector. The one to look for is the large wire that comes from the alternator. I fixed that and now have what seems like aircraft landing lights after what I had become accustomed to.
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