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It still seems that the circuit that goes to pin 30 on the relay is not reliably providing sufficient current, but I`m not convinced that you are troubleshooting with a fully charged battery.
There is another way to wire the relay: you can run a wire from the silver stud on the main breaker, to pin 30 of the relay.
That will provide a nice current supply to pin 30, this is the way the old Softails were wired.
Would that wiring take the relay out of the system?
What gauge wire would that take?
Suggestions for a good battery charger?
Going to look at the wiring diagram again. At least I'm getting to know this circuit very well...and by the way thanks for your help with this issue.
Thanks for your service,
Vietnam 73- 74 veteran.
Last edited by mikey95hd; Jul 24, 2023 at 06:29 PM.
Would that wiring take the relay out of the system?
What gauge wire would that take?
Suggestions for a good battery charger?
Going to look at the wiring diagram again. At least I'm getting to know this circuit very well...and by the way thanks for your help with this issue.
Thanks for your service,
Vietnam 73- 74 veteran.
Thank you for your service...
PM this gentleman for that well deserved and respected on here Veteran medal like Dan has under his USER.
Was just looking at the wiring diagram for your bike and see how it was connected for 89-90...
Will see how it acts today last voltage reading was 12.93 so it seems to be holding a charge better with a slow trickle charge.
I’m lost on this thread. Humor me. Did you ever check the voltage at the starter battery connection circled in blue, when you try to start it? If so, what is the voltage?
Also, did you try jumping the solenoid directly from the battery connection on the starter. If the solenoid, starter, battery, and battery cable are all good the starter motor should run. As per the green wire added below.
Im lost on this thread. Humor me. Did you ever check the voltage at the starter battery connection circled in blue, when you try to start it? If so, what is the voltage?
Also, did you try jumping the solenoid directly from the battery connection on the starter. If the solenoid, starter, battery, and battery cable are all good the starter motor should run. As per the green wire added below.
The blue circle at the starter is under the battery tray, almost impossible to get to with battery in tray. I haven't tried checking voltage at that point. I'm sure I can figure out a way to check it. Haven't tried jumping it from starter positive connection at the starter to the green solenoid wire either. I did however clean the connection at the starter. Your way of doing it would be checking the positive battery cable, which could possibly be a problem loosing current across it. However with the battery at 13.07 it is turning over, I've tried it about 6 times now, seems it might be not getting enough voltage at pin 30 at starter relay.
Try starting this morning, it cranked over fine the first time, everything hooked up, plugs in cylinders, fresh gas in tank, manual compression releases, releasing compression thru them open, and no oil in tank, where that oil is im thinking at the bottom of the crankcase? Second try then click, click, click, voltage at 12.73 now.
Last edited by mikey95hd; Jul 25, 2023 at 12:10 PM.
Dan could you please address what drawback there might be in using a jumper directly from the positive battery post. to the connector that energizes the solenoid.
Would it not help in giving a good direction for a fix ?
I'm pretty sure a simple and safe way to do so wouldn't be outta his reach. He's mentioned in post 124 of his experience "Well being a aircraft mechanic, electrician, ecs, avionics, crew chief, on the F-15 Eagle, I knew eventually would be able to fix this simple two cylinder engine"
Dan could you please address what drawback there might be in using a jumper directly from the positive battery post. to the connector that energizes the solenoid.
Would it not help in giving a good direction for a fix ?
I'm pretty sure a simple and safe way to do so wouldn't be outta his reach. He's mentioned in post 124 of his experience "Well being a aircraft mechanic, electrician, ecs, avionics, crew chief, on the F-15 Eagle, I knew eventually would be able to fix this simple two cylinder engine"
WP
WP looked at a 89-90 wiring diagram, the system is almost the same, except pin 30 on relay show the extra wire coming from the main breaker, silver stud directly to pin 30, the rest of the circuit looks exactly like the newer models.
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