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1975 DT400 Turn Signal/Brake Light Issues


dew05001
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Sorry to revisit the issue, but it seems my battery has lost its charge again. I charged it last week and now it is dead again. Is there a part on the bike that is similar to the alternator on a car and is responsible for keeping the battery charged?

Thanks.

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Yes drew, thers charging coils behind the fly wheel, but you need to meter various points before hauling all that to bits, check volts coming up from mag. [ running] have you a wiring diagram . .check the rectifier,...

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I will check this as soon as i fix my battery. I removed it last night to charge and upon reinstalling, the male connector on the negative side broke off. I will get a new one tonight and solder it when I have time. I will report back once I have tested the various points. Thanks.

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  • 1 month later...

I believe I have located all my issues. I replaced the rectifier and that has fixed the issue with the battery not staying charged.

Now, on to the brake light issue. I found today that the front brake switch looks to be broken, which I imagine would be the reason the brake light is always illuminated. Question is now, how is this replaced? I have found the part on ebay, do I just pull apart the throttle where it has the "Run/Off" switch and replace the brake switch and plug it in the two bullet connectors?? Seems easy enough, any tips would be appreciated. Thanks.

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Yeh its staight forward jobby, push fit at lever bracket, and two wires in headlight, .. :thumb:

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