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How to check voltage output of dynamo

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How to check voltage output of dynamo #1 This topic is about my 1968 Austin-Healey Sprite
jwhite2 Jimmie White Jacksonville, AR, USA Sign in to contact 1967 Austin-Healey Sprite 1968 Austin-Healey Sprite	Topic Creator (OP) Dec 24, 2015 08:45 PM Joined 10 years ago 40 Posts

The manual says connect the D and F terminal of the dynamo together with a wire and then connect the volt meter negative wire and earth the positive wire and run the engine at 750 rpm. Does this sound correct?

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Re: How to check voltage output of dynamo #2
pixelsmithusa Gerard C San Francisco, USA Sign in to contact 1937 Chevrolet Master Deluxe 1946 Austin 10 1953 Morris Minor Series II 1960 Austin-Healey Bugeye Sprite & more	Dec 25, 2015 03:08 AM Joined 14 years ago 1,284 Posts

Which manual are you reading? Bentley or Haynes. Guidelines in the Bentley are typically correct, but I don't trust Haynes for accuracy.

Gerard

http://gerardsgarage.com/

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Re: How to check voltage output of dynamo #3
jwhite2 Jimmie White Jacksonville, AR, USA Sign in to contact 1967 Austin-Healey Sprite 1968 Austin-Healey Sprite	Topic Creator (OP) Dec 25, 2015 08:48 AM Joined 10 years ago 40 Posts

The info I quoted came from Haynes.

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Re: How to check voltage output of dynamo #4
Jim Gruber Apollo Beach, FL, USA Sign in to contact	Dec 25, 2015 11:54 AM Joined 15 years ago 2,650 Posts

As a '68 you should be Negative Ground. IS that the reason for your question? '68 was the year they changed from Positive to Negative Ground.

Jim Gruber - Apollo Beach, FL
Bugsy IV - '60 Bugeye - 1,275+.040 and a 5-Speed - CA Car - 2nd Owner from new - Driving It Like I Stole It!
A truly rust free, garaged in Los Angeles for 57 years Bugeye
Mr. MAX - '04 Miata MAZDASPEED w Factory Turbo - Zoom Zoom Fun and Fast!

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Re: How to check voltage output of dynamo #5
pixelsmithusa Gerard C San Francisco, USA Sign in to contact 1937 Chevrolet Master Deluxe 1946 Austin 10 1953 Morris Minor Series II 1960 Austin-Healey Bugeye Sprite & more	Dec 25, 2015 02:11 PM Joined 14 years ago 1,284 Posts

In reply to # 180499 by Jim Gruber As a '68 you should be Negative Ground. IS that the reason for your question? '68 was the year they changed from Positive to Negative Ground.

Switch over was actually November '67, beginning with car numbers HAN9-72044/GAN460441

Gerard

http://gerardsgarage.com/

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Re: How to check voltage output of dynamo #6
pixelsmithusa Gerard C San Francisco, USA Sign in to contact 1937 Chevrolet Master Deluxe 1946 Austin 10 1953 Morris Minor Series II 1960 Austin-Healey Bugeye Sprite & more	Dec 25, 2015 02:22 PM Joined 14 years ago 1,284 Posts

In reply to # 180497 by jwhite2 The info I quoted came from Haynes.

According to Bentley manual, Connections are correct. As you increase RPM, meter should not fluctuate. Do not allow meter to reach 20 volts; do not exceed 1000 RPM in attempt to get a higher voltage reading.

Next step: Get yourself a Bentley manual.

Gerard

http://gerardsgarage.com/

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