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PV, 120 (Amazon), 1800 General Forum for the Volvo PV, 120 and 1800 cars

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PV headlamps

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Old Feb 11th, 2024, 09:45   #21
arcturus
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Best option is to convert to 12V. lighting quality as different as chalk and cheese. It's what i did. Also giver better and easier starting.
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Old Feb 11th, 2024, 16:44   #22
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It IS a 12v system, Arcturus. I have ordered a Lucas A127, alternator. . .

Thanks everyone, for advice. Itll be Spring soon!
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Old Feb 12th, 2024, 14:22   #23
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The small Denso alternators are more than powerful enough, easy to fit and cheaper than Lucas or Bosch. IMO a better choice. They have built in regulators.
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Old Feb 12th, 2024, 18:27   #24
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Quote:
Originally Posted by Derek UK View Post
The small Denso alternators are more than powerful enough, easy to fit and cheaper than Lucas or Bosch. IMO a better choice. They have built in regulators.
Attachment 152920

Attachment 152921
Both the Bosch and Lucas alternators have built-in regulators too. Normally Denso are reliable but they do suffer premature failure of the rectifier which in turn takes out the voltage regulator. Other than that, they tend to be extremely reliable but each of those alternastors have their own Achilles heals, with the Lucas it's voltage reg and bearings (both easily renewed) and the Bosch, rectifier and bearings.

The advantage of the Lucas and Bosch is they should fit the original dynamo mounts without modification, if memory serves the Denso needs different mounts.
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Old Feb 12th, 2024, 20:22   #25
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Righty. Since about 1990, I have only two alternator deaths, both o.e. in 240s. The PV is not everyday car, tho it does 6k miles a yr, so hopefully a A127 will be reliable enough.

While were here, does anyone know how to wire an ammeter to show discharge, as well as the draw?
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Old Feb 12th, 2024, 22:37   #26
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mor;

For Amp Meter connection, suggested reading: https://www.sw-em.com/elecramb.htm#amp_meter_in_a_122

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Old Feb 12th, 2024, 23:58   #27
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Thank you, Ron. And, ah, what is a/the Snow Weazel?

Last edited by morwenna240; Feb 13th, 2024 at 00:16.
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Old Feb 13th, 2024, 09:37   #28
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Quote:
Originally Posted by Derek UK View Post
The small Denso alternators are more than powerful enough, easy to fit and cheaper than Lucas or Bosch. IMO a better choice. They have built in regulators.
Attachment 152920

Attachment 152921
Are these an easy conversion for the B16 ?
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