Back with a problem (919 ECU harness) - Wrist Twisters
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post #1 of 3 Old 03-15-2019, 01:45 PM Thread Starter
Join Date: May 2018
Posts: 12
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Back with a problem (919 ECU harness)

Hi again folks, not a frequent poster here but am once again looking to tap the knowledge of Hornet experts. It looks like a mouse did some damage to the engine harness right at the large grey ECU connector - bike mostly runs fine, but will stall/stumble sometimes (can make it happen just by poking the connector).

I see my options as thus:

1) Buy a new body harness ($$$$)
2) Buy a used body harness ($$$)
3) Try to carefully cut out & replace the visibly bad/damaged parts of the wires (seems risky, will probably burn my fingers, WAY cheaper & easier than yanking the whole harness)

Any advice/tips? I will be using heatshrink & solder to the best of my ability. This place was helpful in figuring out the TPS issue, so just trying for anything

TwistedKestrel is offline  
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post #2 of 3 Old 03-16-2019, 01:25 AM
(Quintus) Pilus Prior
Join Date: Mar 2013
Location: Sacramento
Posts: 2,202
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Personally, I'd just find some local electronics place and get the proper wire and replace what is needed.

You can also find nice stuff online for cheap, but most cities have some electronics place.

I used a trailer wire harness to rig up the tail lights on one of my trucks. It's a near 50 year old truck and the tail light wiring was really shot. The trailer wire harness was 4 wires on one harness. Worked very well and was pretty cheap.

If you splice, take some time to learn soldering and to use shrink tube. Making it clean and using flux is the key.

KarlJay is offline  
post #3 of 3 Old 03-16-2019, 02:17 AM
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Islandboy's Avatar
Join Date: Dec 2016
Location: Flinders island
Posts: 2,306
Rep Power: 1
I also would try to splice and solder first before buying a new harness.
Try dropping the rear black undertail first. The tray that the ECU sits in. Give yourself plenty of room to work. Unplug the harness from the ECU. Heat shrink is great but sometimes a neat job with electrical tape is OK too. It's easily removed for wire inspection.
Good luck.

Islandboy is offline  

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