Wow it really kills it when you try and start it.
I think the loud clunk you hear in the video is the starter solenoid operating, so it sounds like that is at least trying, but a poor contact in there will cause issues, but not the dying dash lights.
I'm wondering if the actual starter motor windings are OK as well, but I would have thought if it was dead short in there it would blow the fuse.
Could have an open circuit in the motor winding, but that also will not make the dash lights go out.
Have a look at the earth cables, a loose earth will cause a high current draw, but maybe not enough to blow the fuse.
You may have to pull the starter motor out and bench test it to rule it out as the cause or not.
If you can hook a battery up the starter motor directly with jumper cables (disconnect the bike battery first) you may be able to see if it turns the bike over, quick and dirty if you don't want to yank the starter motor out unless it fails this test.
Sorry I can't help more at this stage.
Cheers
Ken
Try with the plugs out first, just have the plugs touching the head or earthed to the bike with wire so you don't damage your ignition system (not sure if the Harleys suffer this, but some vehicle ECU's do not like it).
It will also make it easier to push and turn over.
My decompression valves had been turned off in the software when I got my bike, could hear it slow down and labour the starter motor, especially when it was hot, but it always started after it turned over a few times, they are now turned on and gee it winds over fast now :)
Keep us updated :)
Good Luck.
Ouch, sorry to hear that mate.
It was very lucky you were not at highway speeds mate, or even in traffic.
I would not be surprised if the valve is also bent, and possibly the con rod.
Time to build a 107 or 110 maybe as that head is probably stuffed, you may be able to repair the big gouge marks, as it can't be left in there, but you would have to CC both heads to even up the compression ratio.
Are some 103 heads on gumtree and ebay.
