overdrive problems

[retro baz]

when driving home from the workshop 2day i noticed the overdrive was not working.<br>
where can i find the wires concerned with this and what other things can i check?<br>
i changed my points up the workshop and im not sure if i knocked something or pulled something.<br>
please help.<br>
cheers<br>
1500hl if that helps

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[Unknown]

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