Hi Tom,Good to hear from you! Any idea what year the bike is? In my short amount of reading, it seems like the later bikes ('78+) have a CDI box and quite a few have gone bad. I assume you mean they can't get spark on any of them. Otherwise, the normal points stuff; and the easy to forget things like battery voltage.
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Hey! Yea, I found a cdi on ebay that said it was tested good, it should arrive this week and I’ll toss everything together and hope for lightning! Hopefully it’ll work and I won’t continue to have a big brick but only time will tell. Thanks!
Sent from Mail for Windows 10
From: Wade Dunham
Sent: Tuesday, June 30, 2020 8:13 AM
To: Columbus VinMoto
Cc: Eli
Subject: Re: [Co-OhVinmoto] XS750
Tom:
Sounds like you and Eli have it covered. Borrowing a known good box from someone local to swap in would be ideal but would probably be difficult to find. If Eli is unable to diagnose the problem with the box, Rick Miller on the YAM650 list is still there and still repairing XS650 boxes. He may be able to help. As Grafton mentioned, there are a few on eBay listed as "tested good" or "pulled from a running bike". One of those might be worth a try if the seller has very good feedback and would issue a refund if it didn't work.
Wade Dunham
On Tue, Jun 30, 2020 at 7:18 AM Tom <tomte...@hotmail.com> wrote:
It appeared the harness was merely stripped so all the original ignition wiring is in place. Eli tested each wire. Tickled each coil and got spark. Tested resistance each coil and the three trigger coils. New fully charged battery was put on the charger while we worked. No spark. I was thinking Eli missed a ground but he seemed to have all the bases covered before I got there.
Tom
-------- Original message --------
From: Wade Dunham <waded...@gmail.com>
Date: 06/29/2020 3:59 PM (GMT-05:00)
To: Columbus VinMoto <co-ohv...@googlegroups.com>
Subject: Re: [Co-OhVinmoto] XS750
Tom:
Did he have power to the TCI box? Seems like you said he made his own wiring harness. Here is a diagram for an XS850. I've read that they are very similar to the late XS750 with TCI. This may help in determining if he has the "must have" circuits.
This a a link to troubleshooting the TCI ignition on an XS650, the basic concepts may apply:
Wade Dunham