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Joined: Nov 2011
Posts: 141
1
'Bolter
'Bolter
1 Offline
Joined: Nov 2011
Posts: 141
I have many new voltage regulators that came with a collection of parts. Basic, standard looking black, rectangle, delco style regulators. They all have different numbers on the backs. On the inside the all look the same. How do I tell if for 6 or 12 volts? And perhaps what trucks they go with.

Numbers include.
8AA
3KD
1HD
9CB
2LB
7FA

Thanks.


Trombones Totem Poles And Old Trucks!
Joined: Sep 2001
Posts: 29,269
Bubba - Curmudgeon
Bubba - Curmudgeon
Joined: Sep 2001
Posts: 29,269
I do not know how to determine 6v vs 12v
I think you have date codes, not part numbers?

Year Month Day (Maybe?)
I do not know how to determine decade.

8 A A could be:

8 = 38 48 58
A = January
A = 1st (Happy New Year?)

Maybe someone know better/correct interpretation?

Joined: Mar 2002
Posts: 9,115
'Bolter
'Bolter
Joined: Mar 2002
Posts: 9,115
The 6 volt Delco regulators that I have seen all have two screws in the covers , one in one corner and one in the opposite corner on the diagonal. The 12 volt regulators have a flange on each end at the base level. t
The cover screws are short, one on each end at the flange. This does not apply to aftermarket regulators.


1951 GMC 1 Ton Flatbed -- It is finally on the road and what a great time I have driving it!
1951 1 Ton Completed


My Chevy Master 4 Door is on the Road!
Joined: Feb 2004
Posts: 29,747
H
Kettle Custodian (pot stirrer)
Kettle Custodian (pot stirrer)
H Offline
Joined: Feb 2004
Posts: 29,747
Check the cutout relay closing voltage- - - -this can be done with a simple battery and a rheostat. The regulator doesn't even have to be mounted on a vehicle. PM or email me for a more detailed description.
Jerry


"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
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Joined: Apr 2005
Posts: 2,832
C
'Bolter
'Bolter
C Offline
Joined: Apr 2005
Posts: 2,832
Used to always switch to a solid state regulator on both 6v and 12v. No coils/contacts to mess with. They (used?) to make solid state kits to fit into the original housing for the purists. Think most solid state ones run about $20 on ebay. Before internal regulator alternators we used the 64-69 Chrysler one wire in--one wire out regulator on the street rods. Very small and dependable so a mounting place was easy to find.


Evan

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