Looking for a EHC replacement for a 2003 bigdog Pitbull

DynoDave

DynoDave

Guru
The 2003 Big Dog Motorcycles were more uniformly wired per unit. And the SECOND Electronic Harness Controllers (EHC) , BD4030-1B was introduced. The Electronic Harness Controllers (EHC) was manufactured for BDM by an outside contractor. Due to the ’03 EHC was such a close duplication to the previous Thunder Heart Controller. Big Dog Motorcycles was forced to stop the production of this unit due to an issue of possible copyright infringement.
 
Chong

Chong

U-235
My 03 has both . 4030-1B and a Thunder Heart .. not sure what that means ?
But the previous owner(s?) Have been in there hacking shit from what I can tell .. It's worked as is for me for 3 years. I haven't messed with it .. But someday LMAO !!
The thunder heart does light up . Once the power feed for it that's spliced in separated at the splice and bike wouldn't fire and of course the red led wasn't coming on eighter . Once repaired it took right off .20250725_125618.jpg
 
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DynoDave

DynoDave

Guru
Chong said:
My 03 has both . 4030-1B and a Thunder Heart .. not sure what that means ?
But the previous owner(s?) Have been in there hacking shit from what I can tell .. It's worked as is for me for 3 years. I haven't messed with it .. But someday LMAO !!
The thunder heart does light up . Once the power feed for it that's spliced in separated at the splice and bike wouldn't fire and of course the red led wasn't coming on eighter . Once repaired it took right off .View attachment 135275
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The Thunderheart unit is the ignition module and other is clearly the EHC (electronic harness controller).
 
PapaStein

PapaStein

Member
Mickmorris said:
Earlier models as well have the thunderheart. Believe it or not they are still available & work better than the newer EHC’s… just my opinion mind you.
:cheers: :chopper:
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You like the ThunderHeart RHC better? I’m just exploring information so I can make the best decision. I’ve got an IronHorse that currently needs the RHC and the Daytona TC 88 AIH replaced, again. I think I’ve decided to replace the wiring harness because what else could take out a new RHC, New ignition, and the digital dash all at once? But when I decide what to go with I’m gonna get 2 from what I’ve seen the EHC on my Ridgeback is subject to go bad as well.
 
Mickmorris

Mickmorris

Well Known Member
Supporting Member
PapaStein said:
You like the ThunderHeart RHC better? I’m just exploring information so I can make the best decision. I’ve got an IronHorse that currently needs the RHC and the Daytona TC 88 AIH replaced, again. I think I’ve decided to replace the wiring harness because what else could take out a new RHC, New ignition, and the digital dash all at once? But when I decide what to go with I’m gonna get 2 from what I’ve seen the EHC on my Ridgeback is subject to go bad as well.
Click to expand...
Hmmm I would say a bad VR could certainly cause you to fry all those at once depending on how everything is wired together. I should probably check that on my Ironhorse to see what I have on my Texas chopper. My 2000 Vintage Sport has the Thunderheart and it is a solid choice. I have a spare in case I ever need it. My Ridgeback has the Axle EHC from Curtis @ Wildsteedworx & I have a spare for that bike also. Not really sure about the’96 Vintage Classic but I expect it has the Thunderheart also. Hope you get it all sorted out PapaStein!
:chopper: :cheers:
 
PapaStein

PapaStein

Member
Mickmorris said:
Hmmm I would say a bad VR could certainly cause you to fry all those at once depending on how everything is wired together. I should probably check that on my Ironhorse to see what I have on my Texas chopper. My 2000 Vintage Sport has the Thunderheart and it is a solid choice. I have a spare in case I ever need it. My Ridgeback has the Axle EHC from Curtis @ Wildsteedworx & I have a spare for that bike also. Not really sure about the’96 Vintage Classic but I expect it has the Thunderheart also. Hope you get it all sorted out PapaStein!
:chopper: :cheers:
Click to expand...
I appreciate the good vibes. I will get it at some point. I need to make a decision and get my parts but even then I have a lot of issues slowing me down. I had given great consideration to the v r but they are either good or bad but not back and forth, is that correct? I know ThunderHeart will include the new harness for just a little more $$. I am comfortably familiar with the ThunderHeart wiring details so I will go with them on the 05 Tejas. Thanks for the information. Ride Easy.
 
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