Jump to content

Recommended Posts

Hi all changed my recently acquired tr4 today from pos earth to negative earth  depolarised Dynamo and changed leads on ammeter and coil but won’t start now spins over ok previous owner told me he fitted electronic ignition had a look in dizzy to confirm it but do I need to do anything with this 

Link to post
Share on other sites

"Hi all, changed my recently acquired tr4 today from pos earth to negative earth:  Depolarised Dynamo; changed leads on ammeter and coil but won’t start now. Spins over ok. Previous owner told me he fitted electronic ignition. Had a look in dizzy to confirm it - but do I need to do anything with this?"

Link to post
Share on other sites

I guess you have reversed the polarity on the ignition module and they tend not to like that!

They are cheap - just make sure you get a -ve earth replacement. I guess they don't have polarity protection at the price they are sold at, so it is easy to fry them by simply connecting them up incorrectly and the polarity swap will likely have done that indirectly. You could revert to positive earth as a test just in case it has survived until you get a -ve earth module.

TR Chris is correct you will also need to swap the coil leads over too.

 

Link to post
Share on other sites

In theory changing polarity should be simple but as you have discovered there can be unforeseen problems. In addition to comments above I would also suggest you check the voltage regulator. The old wire type are ok but the newer solid state ones are polarity dependent. I also once tried connecting a metal bodied clock that was positive earth to my negative earth car. Spent ages trying to insulate it and gave up in the end.

Keith

Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Restore formatting

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Loading...
×
×
  • Create New...

Important Information

Please familiarise yourself with our Terms and Conditions. By using this site, you agree to the following: Terms of Use.