Topic: '39 Standard with Radio Main Wiring Harness


russonator    -- 02-26-2026 @ 6:14 AM
  The 39 Deluxe and 39 Standard equipped with a radio both use the same voltage regulator and 2 brush generator, as opposed to the 39 Standard without a radio that uses a cutout and 3 brush generator. Would the 39 Deluxe and 39 Standard with radio both then use the same main wiring harness?

Russ H
Southeast PA


kubes40    -- 02-26-2026 @ 7:59 AM
  Russ, first and perhaps foremost, a '39 standard did not necessarily have a cut out if the car was equipped with a radio. That is a fallacy.
In mid 1939 production, nearly all cars were equipped with a voltage regulator. That is, until the stock of cutouts was used up and / or returned for service part use.
The same wire harness was used for all cars that came from the factory with a voltage regulator. Cars that were authentically equipped with a cutout but later changed over to a voltage regulator were fitted with a short "adapter" harness supplied by Ford.

Mike "Kube" Kubarth


russonator    -- 02-26-2026 @ 9:15 AM
  Mike,
Thanks for your reply. I was not asserting that 39 Standards equipped with a radio used a cutout, but rather that 39 Standards with factory radio used the 2 brush generator with voltage regulator (same as 39 Deluxe). This is my understanding from the 38-39 Ford Book. My question really is about obtaining the correct wiring harness for my Standard that is factory equipped with a radio. The usual vendors tend to market the main harness as either for a 39 Standard or 39 Deluxe, i.e. without making a radio distinction. My guess is that the harness marketed as 39 Deluxe will work with my 39 Standard equipped with radio. Looking for confirmation or contradiction of same.
-Russ

Russ H
Southeast PA

This message was edited by russonator on 2-26-26 @ 11:30 AM


kubes40    -- 02-26-2026 @ 11:18 AM
  Russ, I was only attempting to clarify the fact that standard cars had a voltage regulator direct from the assembly line on about half the cars built. Radio or not, about half had a voltage regulator.
Cars that were built with a cutout but later converted to a regulator were fitted with an adapter harness to allow this modification. Somewhere around here I have a service letter that allowed the part number and an illustration as to where (how) that adapter harness was to be installed.

I'd suggest you purchase a harness for the deluxe model. It will fit your standard model and be built for a regulator.

Mike "Kube" Kubarth


russonator    -- 02-26-2026 @ 11:35 AM
  I got ya now, Mike. Thanks for the additional info and confirmation that I'm on the right track with the harness.

-Russ


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