I put on a RSD fender also. What did you guys figure out on the ECM relocation. I was thinking a shorter battery and sit the ECU on top. Has anyone tried it? If so, what battery?

 

I used an EarthX ETX 36C, gave me room to stow everything flat.

Here is a link to how I did it:

https://www.hdforums.com/forum/softa...l#post14038081

There have been a couple guys who mounted the ECM 'puter behind the oil tank, this would be the cheaper way. If I find the thread, Ill add it here.

EarthX has a built in over and under charge protection, Very important feature.

This battery has performed fanatstic for more than a year, cranking my 103 with ease.

 

Mount it between the oil tank and mudguard. You have to disconnect and re-route the wires, so make a map. Then zip tie the ECM with heavy duty ties. I've had it like that for about 5 years now, no issues.

 

Come to think of it, I believe since I did mine there is a seat pan you can get that has a space for the ECM, so you dont have to move it.