My eyes aint what they used to be, but up by the 6 pin connection, is that circuit board discolored ? Couldn't tell if its burned or just my eyes![]()
I've been reading other parts about this module and the talking about lights coming on and stuff like that this one? Nothing not a light comes on when I turn ignition on. We will see in couple days when this new module comes.
Live Free and Ride Hard

Yes thanks I've ordered a new module.
Haha..nice way to put it.You do realize the unit you are holding in you're hand is not the ignition module don't you? That is the EHC or electronic harness controller. The ignition module is the metal one with the thunder heart shield and sword on it.
Eric is right and that is why I asked about the micro relay. Some one else has been in there. She ain't no virgin any more. Don't get discouraged. When this is all over with you will love that bike.
Nice eye Rick I didn't even notice he had his finger where that relay went. I was looking at the tank pics and missed that haha.That relay is the primary power relay that acts like a master fuse. In my 2000 vintage, it sits behind and outside of the module but acts as a fuse if enough resistance builds up it opens up and disconnects power from the module (essentially everything). It is a very common single pole relay. I am surprised to see it plug into the module but do see how it could still perform its function. But as Eric and Frank are saying, the module has nothing to do with your ignition except the routing of the low voltage start button. The aluminum box can be replaced along with the cam sensor in the cone with a single S&S/Crane Hi-4N ignition that will perform beautifully and mount with the same doubly screws as your cam sensor.
1++ S&S/Crane Hi-4N ignition and fergetaboutit.....That relay is the primary power relay that acts like a master fuse. In my 2000 vintage, it sits behind and outside of the module but acts as a fuse if enough resistance builds up it opens up and disconnects power from the module (essentially everything). It is a very common single pole relay. I am surprised to see it plug into the module but do see how it could still perform its function. But as Eric and Frank are saying, the module has nothing to do with your ignition except the routing of the low voltage start button. The aluminum box can be replaced along with the cam sensor in the cone with a single S&S/Crane Hi-4N ignition that will perform beautifully and mount with the same doubly screws as your cam sensor.
Read page 11 chapter 4.1Yes thanks I've ordered a new module.
If it don't light up like a V-twin Christmas tree I'm returning it and going with a whole new ignition.
I've emailed thunder heart and called them. If I don't hear from them soon the answer is very clear they don't need my business.
I'm done messing around with this. Thanks y'all for your help when the new module comes in I'll post my findings.
Ribs
Live Free and Ride Hard


At first I did not remember that relay on mine and thought it was separate from the EHC. These 12 hour shifts seven days a week are burning up what few brain cells I have left. He will know more about his bike than most guys when he is done with it. Keep up the good work. Did you get you're bike running Rick?That relay is the primary power relay that acts like a master fuse. In my 2000 vintage, it sits behind and outside of the module but acts as a fuse if enough resistance builds up it opens up and disconnects power from the module (essentially everything). It is a very common single pole relay. I am surprised to see it plug into the module but do see how it could still perform its function. But as Eric and Frank are saying, the module has nothing to do with your ignition except the routing of the low voltage start button. The aluminum box can be replaced along with the cam sensor in the cone with a single S&S/Crane Hi-4N ignition that will perform beautifully and mount with the same doubly screws as your cam sensor.
Not yet. Its been a very spotty search for the gremlin since eliminating the big and obvious.At first I did not remember that relay on mine and thought it was separate from the EHC. These 12 hour shifts seven days a week are burning up what few brain cells I have left. He will know more about his bike than most guys when he is done with it. Keep up the good work. Did you get you're bike running Rick?
Yeah mine does nothing, it use too light up and flash when cranking. But I guess it decided to pack it in.Read page 11 chapter 4.1
We do not want that thing lighting up like a Christmas tree. View attachment 42259
Although a new EHC may solve your problems. If it is like the 04 the EHC supplies voltage to the thunder heart ignition module ( that little silver box at the top of the tank) it needs at least 8volt for that module to work.
When my EHC failed it had the power on LED illuminated That's a good thing. No other LED was illuminated that's a good thing. Problem was Thunderheart ignition module at the top of the tank with the one LED (that little silver box) never flashed while cranking. So with an amp meter and a little sewing needle I figured the EHC was only putting out 6volts. Damn the bad luck. Now to test that theory I could get the bike to run by supplying 12 volts with that same sewing needle. Fired right up.
Shit
Replaced the EHC. All is well.
View attachment 42260
This is the thunderheart ignition module. With the little LED by the data port. It should flash while cranking and stay on while running providing the cam sensor is good and you have enough supply voltage from the EHC.
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