Where’s the Data Link Connector?
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Intermediate
Joined: Mar 2026
Posts: 32
Likes: 21
From: Indiana
Where’s the Data Link Connector?
A car fanatic is going to help me with a tuner. He obviously doesn’t know where the plug is, so I went looking for it. I’ve found several descriptions online and on YouTube. They all say the same thing: “under the left side panel, might be tucked behind the tubing, gray with a red cap.”
Well, there’s a lot of stuff in there, but no gray plug at all, with or without a cap.
Where is it, really? Could I trouble someone for a photo? It’s a 2021 Iron 1200.
Well, there’s a lot of stuff in there, but no gray plug at all, with or without a cap.
Where is it, really? Could I trouble someone for a photo? It’s a 2021 Iron 1200.
HDF Community Team
Joined: Dec 2011
Posts: 8,610
Likes: 4,048
From: San Diego, CA
It looks like the plug just below is only attached with a plastic lanyard, so you may have found it. H-D probably saved millions not having to buy a special orange cap.
John
John
Last edited by John Harper; May 27, 2026 at 06:49 PM.
HDF Community Team
Joined: Dec 2011
Posts: 8,610
Likes: 4,048
From: San Diego, CA
You can always check your wiring diagram on the HD service portal and check the wire colors to be sure, but I assume that's it.
https://serviceinfo.harley-davidson.com/login
John
https://serviceinfo.harley-davidson.com/login
John
Seasoned HDF Member
Joined: Mar 2021
Posts: 18,499
Likes: 3,729
From: backwoods
Manual has a page that lists the locations of the connectors with the numbers used on drawings for my bike. I've started to sharpie the numbers on them
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Club Member
Joined: Apr 2013
Posts: 5,891
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From: Cape Cod
You didn't answer the mans question, just what YOU do, no one cares what YOU do!
So you do you, someplace else please!
So you do you, someplace else please!
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Seasoned HDF Member
Joined: Mar 2021
Posts: 18,499
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From: backwoods
I didn't know page was there for a long time . Handy page to find.
Thread Starter
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Intermediate
Joined: Mar 2026
Posts: 32
Likes: 21
From: Indiana
that described anywhere. But it’s good to post here and get confirmation. If the tuner ever gets here I’ll plug it in and hopefully something worthwhile will happen.