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Hello Mike
I assume you are referring to the Regulators when you indicated the relay 1 & 2?
How is the battery condition? How old? Probably already have addressed this?
Could be regulators, have they ever been replaced?
Do you have a service manual for schematics?
I have seen a lot of posts about poor connections at the bus bar.
Do you have a regular A&P that you work with?
__________________
Herb R Harney
1968 337C
Flying the same Skymaster for 47 years
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