National New Yorker hidden pickups

[Kelvee]

I need some help rewinding the pickups in my old 1937 national Lap steel.The bridge PU is good and strong and reads 12K ohms but the 4 fingerboard coils give no normal reading,however switching to the 200meg value on my ohm meter I get 25-30meg readings.I figure the coils are shot my question can someone tell me the gauge wire these old PUs used ,my old Supro PU read about 5-6K so I think that's probably the range I should shoot for I would love any help or guidance anyone can give me.Cheers Kel.

[RedHouse]

I need some help rewinding the pickups in my old 1937 national Lap steel.The bridge PU is good and strong and reads 12K ohms but the 4 fingerboard coils give no normal reading,however switching to the 200meg value on my ohm meter I get 25-30meg readings.I figure the coils are shot my question can someone tell me the gauge wire these old PUs used ,my old Supro PU read about 5-6K so I think that's probably the range I should shoot for I would love any help or guidance anyone can give me.Cheers Kel.

Jason Lollar is pretty savvy on stuff like that, you might call or send him an email, don't be shy he's a nice guy and quite likely would have something to tell you. He is busy though so keep that in mind.

[Bill M]

Welcome to the forum Kelvee. You can mic the existing wire to get the gauge, then unwind the coil and count the turns and get the turns per layer if it was machine wound. This is what I do when I get a rewind in that there are no specs. on.

[Kelvee]

Thanks Guys will try those options just checked the wire it comes in in at .057mm or close to so I guess 43awg would be it.Why do I get such a high reading at 25 plus Meg for the coil.

[David Schwab]

Why do I get such a high reading at 25 plus Meg for the coil.

Because the coil is open.