Solo seat attachment
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Stage III
Joined: Jan 2026
Posts: 3
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From: Australia
Solo seat attachment
Hi all, new here….i just got a new soo seat for my 2010 sportster custom 1200xl and im wondering if there is anyway to relocate the control module box as the seat won’t sit flat, any suggestions, thank you
Seasoned HDF Member
Joined: Oct 2010
Posts: 5,300
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From: Florida
Welcome. Yes, that's a common problem. What brand seat? Sometimes, you just have to root around and make do. That's what I had to do with the same problem. You'll eventually find a way to make the seat fit, I promise.
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Stage III
Joined: Jan 2026
Posts: 3
Likes: 0
From: Australia
thank you…aftermarket seat from eBay by a company called nicemotorjj (can’t remember the brand on the seat if memory as I’m at work on nightshift) the seat fits but it’s the control module that won’t let it sit flat
Seasoned HDF Member
Joined: Sep 2017
Posts: 12,258
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From: England
Try this and see if you find a thread that suits:-
https://www.google.com/search?q=site...ecm+relocation
https://www.google.com/search?q=site...ecm+relocation
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Stage III
Joined: Jan 2026
Posts: 3
Likes: 0
From: Australia
Try this and see if you find a thread that suits:-
https://www.google.com/search?q=site...ecm+relocation
https://www.google.com/search?q=site...ecm+relocation
HDF Community Team
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From: Santa Ana, CA
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From: England
It's mounted in front of the battery now but for every improvement there is a downside. As it now sticks out sitting behind the rear cylinder it makes it difficult to get at the wiring for the starter motor and ground points.
Road Warrior
Joined: May 2017
Posts: 1,967
Likes: 1,583
From: Scottish Highlands.
The ECM in the rear fender only affects Sportster models from 2007, 2008 and 2009. There are aftermarket seats with a hollow in the base to accommodate the ECM on these model years. 2010 did not have the ECM mounted in the fender, the OP must have a 2009 Sportster which was registered in 2010.
Last edited by Rob Roy's Revenge; Jan 14, 2026 at 08:15 PM.
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