Breakout box
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Road Warrior
Joined: Mar 2008
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Breakout box
Does anyone know if there are cables available to connect an OTC breakout box to the ecm on a Harley? I would like to use a scope to better understand how the sensors work and the timing of events. A breakout box would make it a whole lot easier. The one referred to the diagnostic manual is made by Kent-Moore, same company I believe as OTC, but they will only sell them to dealerships and my dealer won't sell one to me. So I'm looking for alternatives. I can't find a list of cables available for the OTC breakout boxes though.
I'm not sure if you'll be able to buy what you need. You would have to custom make one and that would be a pain, but it could be done. Probably be expensive as you would need bothe male and female ends. I know I use ours all the time, it is really a lifesaver.
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Road Warrior
Joined: Mar 2008
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You can get the connectors for about $3.50 each. I don't really see why the dealership won't sell them. About the only good reason I see is to keep people from hacking the ecm, but there the lack of a breakout box would hardly slow them down. It certainly doesn't hinder DynoJet, DTT or Zippers.
Banned
Joined: Mar 2007
Posts: 3,706
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From: Woodstock, Ont , Can
You can get the connectors for about $3.50 each. I don't really see why the dealership won't sell them. About the only good reason I see is to keep people from hacking the ecm, but there the lack of a breakout box would hardly slow them down. It certainly doesn't hinder DynoJet, DTT or Zippers.
Ron
Last edited by rbabos; Mar 25, 2009 at 05:38 PM.
Road Captain
Joined: Jun 2006
Posts: 581
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From: Portland, OR
I'm assuming what you're trying to achieve is to probe key signals from/to the ECM? I don't know what the dealers break out box looks like but I assume it's a box where the ECM snake/cable connects to the box then passes through the box and back to the ECM unit. And within the box, it "breaks out" or taps into key critical ECM signals and allows you to hook a logic analyzer or diagnostic computer to the box via BNC connectors. Is this right?
Sounds pretty easy to make your own, though very tedious. However, if you're going to use it a lot, it could be worth the effort to construct. Most of us don't have a multi channel logic analyzers, but a dual channel scope are common and not "too" terribly expensive. Also if you are going to use a scope, I'd use the scope probes for two reasons. One, is that you are sure not to load down the probed signal with a high impedance scope probe and two, you can use any terminal strip to bring out the ECM signals and save the cost of BNC connectors.
Various on-line electronic stores will have the parts you need as well as Radio Shack.
Now, being a BSEE, you have my curiosity up why you want to snoop the ECM signals. Are you planning on making a new toy to sell to all Harley owners? If yes, I want in!
Sounds pretty easy to make your own, though very tedious. However, if you're going to use it a lot, it could be worth the effort to construct. Most of us don't have a multi channel logic analyzers, but a dual channel scope are common and not "too" terribly expensive. Also if you are going to use a scope, I'd use the scope probes for two reasons. One, is that you are sure not to load down the probed signal with a high impedance scope probe and two, you can use any terminal strip to bring out the ECM signals and save the cost of BNC connectors.
Various on-line electronic stores will have the parts you need as well as Radio Shack.
Now, being a BSEE, you have my curiosity up why you want to snoop the ECM signals. Are you planning on making a new toy to sell to all Harley owners? If yes, I want in!
I'm assuming what you're trying to achieve is to probe key signals from/to the ECM? I don't know what the dealers break out box looks like but I assume it's a box where the ECM snake/cable connects to the box then passes through the box and back to the ECM unit. And within the box, it "breaks out" or taps into key critical ECM signals and allows you to hook a logic analyzer or diagnostic computer to the box via BNC connectors. Is this right?
Sounds pretty easy to make your own, though very tedious. However, if you're going to use it a lot, it could be worth the effort to construct. Most of us don't have a multi channel logic analyzers, but a dual channel scope are common and not "too" terribly expensive. Also if you are going to use a scope, I'd use the scope probes for two reasons. One, is that you are sure not to load down the probed signal with a high impedance scope probe and two, you can use any terminal strip to bring out the ECM signals and save the cost of BNC connectors.
Various on-line electronic stores will have the parts you need as well as Radio Shack.
Now, being a BSEE, you have my curiosity up why you want to snoop the ECM signals. Are you planning on making a new toy to sell to all Harley owners? If yes, I want in!
Sounds pretty easy to make your own, though very tedious. However, if you're going to use it a lot, it could be worth the effort to construct. Most of us don't have a multi channel logic analyzers, but a dual channel scope are common and not "too" terribly expensive. Also if you are going to use a scope, I'd use the scope probes for two reasons. One, is that you are sure not to load down the probed signal with a high impedance scope probe and two, you can use any terminal strip to bring out the ECM signals and save the cost of BNC connectors.
Various on-line electronic stores will have the parts you need as well as Radio Shack.
Now, being a BSEE, you have my curiosity up why you want to snoop the ECM signals. Are you planning on making a new toy to sell to all Harley owners? If yes, I want in!
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