Connector and Wire Size for ECU
Thread Starter
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Road Warrior
Joined: Jan 2006
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Connector and Wire Size for ECU
The bike is a 2009 FLSTC.
For reasons I won't go into, I had separated the connector plug from the ECU. In the process, I managed to break one of the wires at the point where it connects to the barrel. Does anyone know the gauge of the wire and number of the barrel?
I'm pretty new to Deutsch connectors, but I'm quickly learning to hate them.
Thanks.
For reasons I won't go into, I had separated the connector plug from the ECU. In the process, I managed to break one of the wires at the point where it connects to the barrel. Does anyone know the gauge of the wire and number of the barrel?
I'm pretty new to Deutsch connectors, but I'm quickly learning to hate them.
Thanks.
Seasoned HDF Member
Joined: Nov 2008
Posts: 6,115
Likes: 358
From: Illinois
I believe you can purchase a wire measuring tool and once you know the wire size you purchase the corresponding pin or socket. Maybe if there is an electronics component parts store near you they can guide you better. If you were able to pull the socket/barrel out maybe they can match it.
Seasoned HDF Member
Joined: Sep 2017
Posts: 12,255
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From: England
I don't know what the wire gauge is. At a guess it will be AWG 20 or AWG 22 as AWG 18 seems pretty big for that device.
The connector is a 36 pin Packard HD part number #72078-00. Namz do a kit with the connector and pins. Namz ECM 36-Pin Connector Kit (NHD-72078-00)
It's also known as a 36 pin micro pack 100W connector.
customconnectorkits.com/products/ecm-36-kit
The connector is a 36 pin Packard HD part number #72078-00. Namz do a kit with the connector and pins. Namz ECM 36-Pin Connector Kit (NHD-72078-00)
It's also known as a 36 pin micro pack 100W connector.
customconnectorkits.com/products/ecm-36-kit
Last edited by Andy from Sandy; Aug 22, 2025 at 04:55 AM.
Thread Starter
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Road Warrior
Joined: Jan 2006
Posts: 1,797
Likes: 1,188
Wow! Answers! I am grateful and amazed. I really didn't expect anyone would answer or know the answer as it would be odd for another person to find themselves in the ridiculous situation I'm in now. I did find some barrels and a crimper tool on Amazon that have worked well, but I ain't out of the woods by a long stretch.
To come clean, this whole misadventure began with my attempt to install a Daytona Twin Tec tuner on a basically stock bike. Why? Just for the heck of it; something to fiddle with. I like to think I know my way around a wrench; I've successfully rebuilt Evo an Twin Cam engines. But maybe I don't know my way around a wire.
The instructions said to remove 7 wires from the ECM connector; substitute DTT wires; and install the stock wires into the DTT unit. How hard can it be? The instructions said it should take about 15 minutes; it's now 5 days later. (Of course, that includes waiting for Amazon deliveries)
I kind of ham-handedly went after it, and I was a little rough on the wires, even managing to break one. I finally managed to get the connector and its wires back together; everything works when I try to start it, except I can't hear the fuel pump prime, and of course, it doesn't start.
I noticed that one of the pins in the ECM itself is depressed below the level of the others. I can pull it even with them, but when I press the connector into the ECM, it depresses again. I figure this is power to the fuel pump, and when I join the two parts, one of the barrels in misaligned and pushes the pin back in. That shouldn't happen, but neither should the rest of this mess.
I appreciate all the advice, and all other tips are welcome. I'm glad I have my 2003 Electra Glide to ride in the interim, but I really don't want the Heritage Classic to "sleep with the fishes."
To come clean, this whole misadventure began with my attempt to install a Daytona Twin Tec tuner on a basically stock bike. Why? Just for the heck of it; something to fiddle with. I like to think I know my way around a wrench; I've successfully rebuilt Evo an Twin Cam engines. But maybe I don't know my way around a wire.
The instructions said to remove 7 wires from the ECM connector; substitute DTT wires; and install the stock wires into the DTT unit. How hard can it be? The instructions said it should take about 15 minutes; it's now 5 days later. (Of course, that includes waiting for Amazon deliveries)
I kind of ham-handedly went after it, and I was a little rough on the wires, even managing to break one. I finally managed to get the connector and its wires back together; everything works when I try to start it, except I can't hear the fuel pump prime, and of course, it doesn't start.
I noticed that one of the pins in the ECM itself is depressed below the level of the others. I can pull it even with them, but when I press the connector into the ECM, it depresses again. I figure this is power to the fuel pump, and when I join the two parts, one of the barrels in misaligned and pushes the pin back in. That shouldn't happen, but neither should the rest of this mess.
I appreciate all the advice, and all other tips are welcome. I'm glad I have my 2003 Electra Glide to ride in the interim, but I really don't want the Heritage Classic to "sleep with the fishes."
Thread Starter
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Road Warrior
Joined: Jan 2006
Posts: 1,797
Likes: 1,188
Alrighty, pins and barrels are all lined up and seem to be fitting together okay; although I did order the Packard connector just in case.
I'm still getting no priming of the fuel pump, and of course, no starting.
I am getting a CEL; could someone please tell me how to retrieve a trouble code on a 2009 Heritage Classic?
Thanks.
I'm still getting no priming of the fuel pump, and of course, no starting.
I am getting a CEL; could someone please tell me how to retrieve a trouble code on a 2009 Heritage Classic?
Thanks.
Thread Starter
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Road Warrior
Joined: Jan 2006
Posts: 1,797
Likes: 1,188
Okay; I found the code; it looks like P55PE6 or P55P66; can't tell which.
Can anyone tell me what this is?
Thanks.
Can anyone tell me what this is?
Thanks.
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Seasoned HDF Member
Joined: Oct 2012
Posts: 13,104
Likes: 13,047
From: Texas, USA
Alrighty, pins and barrels are all lined up and seem to be fitting together okay; although I did order the Packard connector just in case.
I'm still getting no priming of the fuel pump, and of course, no starting.
I am getting a CEL; could someone please tell me how to retrieve a trouble code on a 2009 Heritage Classic?
Thanks.
I'm still getting no priming of the fuel pump, and of course, no starting.
I am getting a CEL; could someone please tell me how to retrieve a trouble code on a 2009 Heritage Classic?
Thanks.
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Thread Starter
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Road Warrior
Joined: Jan 2006
Posts: 1,797
Likes: 1,188
Thanks; I found 4 codes, all related to the ECM. I cleared them and upon (attempted) restart, it showed no codes. Again, cranks but no start.
So the search continues; it's difficult to believe that the problem is anything independent of my recent efforts.
I did note that the last reply to "ready for dynamite" was to use TNT as it's more stable. I may go that route.
So the search continues; it's difficult to believe that the problem is anything independent of my recent efforts.
I did note that the last reply to "ready for dynamite" was to use TNT as it's more stable. I may go that route.