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Serious Wiring Problems: 2007 Fat Boy

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  #21  
Old 08-23-2022 | 07:36 PM
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Originally Posted by Rounders
The derby has 5 bolts, which is TC typically evo has 3. Harleys in 2007 were all FI. I couldn't tell what the engine was. Rocker covers are not TC.

What happened to it that everything is repaired?

It is some kind of special construction

Yes. This is a special construction. DMV has it listed as a 2007 special construction. As i was explaining at the beginning of the thread is that there were a lot of wires cut, spliced, removed, etc. When i got it. Guy just was roping and wiring to get it to run and stay running instead of just finding the problem.
I've gone through the entire loom and rewired everything back to original as well as looking for bare, exposed wires. Replaced or made new plugs for the rear lights. Can't get a spark, but, i think i found the issue. 3 wires on the ECM plug tail look like they shorted together. So I'm getting a new, or a replacement, ECM next.

A friend of mine is certain that the engine is a 97-99 Evo. All the wiring diagrams and parts I've looked up match the same years, so, I'm just going with it until i actually have to open the engine up... which hopefully isn't for a long while.
 

Last edited by SneakyBastard; 08-23-2022 at 07:43 PM.
  #22  
Old 08-23-2022 | 07:53 PM
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That bike does not have an ECM, it just has an ignition module.

7 Wires on ignition module:

3 wires from the cam position sensor to ignition module.

Power wire (White/Black) from kill switch branches out to connect to both the ignition module and one post on the coil.

Pink wire from ignition module goes to the other post on the coil.

Violet/White wire from VOES to ignition module.

Ground wire.

 
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  #23  
Old 08-23-2022 | 07:54 PM
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Originally Posted by SneakyBastard
Yes. The White/Black wire has 12.87 volts. Pink/White wire, nothing..


could this be the problem? I wouldn't think you can short an ECM then tape it back up and hope it works...., could you?
Didn`t you say you had repaired the harness?
 
  #24  
Old 08-23-2022 | 07:56 PM
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This is on the ECM pig tail. It was all taped up and i decided to open it up after getting no spark. One step at a time. Looked at all the possible simple solutions. Now im digging deeper.
 

Last edited by SneakyBastard; 08-23-2022 at 07:59 PM.
  #25  
Old 08-23-2022 | 07:58 PM
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Originally Posted by Rounders
The derby has 5 bolts, which is TC typically evo has 3. Harleys in 2007 were all FI. I couldn't tell what the engine was. Rocker covers are not TC.

What happened to it that everything is repaired?

It is some kind of special construction
This is your typical way of posting, just come in mid stream and cause confusion.

Next thing you will do is answer for the OP.

Go back and read the previous posts.
 

Last edited by Dan89FLSTC; 08-23-2022 at 08:00 PM.
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  #26  
Old 08-23-2022 | 08:12 PM
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Originally Posted by Dan89FLSTC
This is your typical way of posting, just come in mid stream and cause confusion.

Next thing you will do is answer for the OP.

Go back and read the previous posts.
What do you make of derby? Did they mate TC primary, or do some after market evos primaries have 5 screws.

Yes I know special construction, he said that first post. Just trying to figure out what he has .

I wonder if he can bypass cam sensor? I would look up manual for the ignition. I believe mine says how to bypass cam sensor.
 
  #27  
Old 08-23-2022 | 11:42 PM
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Originally Posted by Dan89FLSTC
That bike does not have an ECM, it just has an ignition module.

7 Wires on ignition module:

3 wires from the cam position sensor to ignition module.

Power wire (White/Black) from kill switch branches out to connect to both the ignition module and one post on the coil.

Pink wire from ignition module goes to the other post on the coil.

Violet/White wire from VOES to ignition module.

Ground wire.
Got it. Now the pink wire coming from the ignition module is what tells the coil to fire, correct? I am assuming this signal is dictated by the distributor/breaker/camshaft position sensor? So if the white wire has power, it is a problem between the CPS and the ignition module, assuming the coil pack is good. Correct? I dont see any issues with the cps module. It looks to be adjusted dead center, as well. Havent looked up timing settings yet, but, seems normal, anyway. With the short showing in this connector, it appears to be my culprit. It looks like it was shorted hot enough to begin melting the white, black and pink wires plastic casing. He taped them all up, but, i cant tell you if it ever fired up again after that.

And ecm was just a lot simpler than typing ignition module... lol...

 
  #28  
Old 08-23-2022 | 11:46 PM
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And what is a 'derby'?
 
  #29  
Old 08-24-2022 | 06:28 AM
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The round cover on the outer primary cover is called the derby cover.
 
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  #30  
Old 08-24-2022 | 06:33 AM
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It has 5 screws, evos 3. Not sure if after market primary or somehow mated TC to Evo.
 


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