Is the gen warning light in the speedo coming on when you turn the key on then going out after you start the engine? Make sure your dash oil pressure and gen warning lights are working! The problem could be either the generator or the voltage regulator. It's possible that the 12V conversion located the VR on the gen, on the fan housing on the firewall or under the back seat, depending on where the person installed it. It makes good sense to put it on or near the generator due to ease of wiring. You could try pushing in on the gen brushes with a pencil or a popsicle stick while it's running (carefully!) If it starts to charge (the dash warning light goes out), the the brushes are worn and replacing them may fix you problem cheaply and easily.

Mike B.

On 8/1/2013 10:54 AM, Kyle Davis wrote:
It is the charging system. After starting it up, disconnected the battery and the engine promptly died out.

going to try replacing generator brushes first.

it could be a shot voltage regulator, but, if so, does anybody know which kind was common in 12 volt conversions? The one that they bolted to the fan shroud?



On Mon, Jul 29, 2013 at 11:54 AM, <[email protected] <mailto:[email protected]>> wrote:

    Today's Topic Summary

    Group: http://groups.google.com/group/vintagvw/topics

      * 1966 vw beetle issues <#1402b232b24469aa_group_thread_0> [3
        Updates]

    1966 vw beetle issues
    <http://groups.google.com/group/vintagvw/t/e5a2aba619574bc0>

        Kyle Davis <[email protected] <mailto:[email protected]>>
        Jul 29 09:24AM -0400


        > Hey all,


        Picked this up about four weeks ago. Need to get it running more
        reliably. It's been in the brake shop for three out of four of
        those weeks.

        I've replaced the battery ...more
        <http://groups.google.com/group/vintagvw/msg/8b150d50564f42b0>

        Back to top. <#1402b232b24469aa_digest_top>

        Mike B <[email protected] <mailto:[email protected]>>
        Jul 29 09:38AM -0400

        It sounds like your generator or voltage (not bilge!)
        regulator are not
        working to keep the batt charged. If you disconnect the batt
        positive
        post with it running and the engine dies, then you're ...more
        <http://groups.google.com/group/vintagvw/msg/c7244887ffab4acb>

        Back to top. <#1402b232b24469aa_digest_top>

        Dean Johnson <[email protected]
        <mailto:[email protected]>> Jul 29 09:40AM -0400

        Test the output voltage of the generator/regulator with the
        engine running,
        rev it up a bit as generators don't work well at low rpm. You
        should get 13
        to 14 volts when you rev it up. ...more
        <http://groups.google.com/group/vintagvw/msg/b2b7e71b021851c3>

        Back to top. <#1402b232b24469aa_digest_top>

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