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  1. John Young

    HDJ81 strange intermittent starting problem with 12-24 switchover relay

    The truck seems to be starting every time now. I do notice just a fraction of a second delay between turning the key and the starter engaging. Is that the normal behavior?
  2. John Young

    HDJ81 strange intermittent starting problem with 12-24 switchover relay

    I kind of peered down to that ground lead to the engine block on the drivers' side and then shied away... it is dark and really hard to get to. You are right. I need to take some systematic voltage measurements and really understand that diagram much better.
  3. John Young

    HDJ81 strange intermittent starting problem with 12-24 switchover relay

    More strangeness.... My parts guy was able to source a new relay. I put it in and it did not even buzz. Just nothing. I also tried cleaning the connector on the pigtail coming off the relay. Put the old one back in and it was back to sort of intermittent but started usually on a few tries...
  4. John Young

    HDJ81 strange intermittent starting problem with 12-24 switchover relay

    Interesting. Helpful. When it fails to start there is a buzz. Both batteries are almost new, but I should check their capacity. They are identical, bought at the same time, Group 27 I think. I will check the voltages. Lately it seems to just buzz about 1/3 of the time. The truck was off...
  5. John Young

    HDJ81 strange intermittent starting problem with 12-24 switchover relay

    Thank you Squash. We've replaced the two of the four battery clamps and I cleaned up the ground on the passenger side battery that goes to the passenger side fender. I have not gone through the fusible link yet. I need to read up on those. I've seen guys making up their own. BTW, today I...
  6. John Young

    HDJ81 strange intermittent starting problem with 12-24 switchover relay

    It really did not feel like that--it wasn't that I hit it and jarred it loose, but rather the moment I touched it with the blade of a screwdriver--making electrical contact with my hand on the shaft of the screwdriver, the relay flipped. I may be mistaken in all this. (And thank you for your...
  7. John Young

    HDJ81 strange intermittent starting problem with 12-24 switchover relay

    So I'm driving around a bit (finally) in the RHD to LHD converted HDJ81 and it has an intermittent starting problem. A good fraction of the time when I turn the key I get a buzz but no crank. Batteries are fully charged and in the green. Originally we thought it was the switchover relay...
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