Tech question for those with brake controllers
Does the body of the circuit breaker have to be grounded (ie screwed into the body, or is plastic ok), or is it just an in-line affair?
I wish I could take credit for the above explanation, but alas, it is from my education with the great Danno 4x4.
No idea, but I'm sure Danno will chime in to help.
Most AutoParts stores have a pretty good selection of circuit breakers in different configurations and what I decided to use was an ATC type footprint Type I self resetting circuit breaker, since it fits nicely in an ATC fuse holder.
Check out this web page and you can see exactly what I used :
http://www.cooperet.com/6/BladeFusesandAccessories.html
Basically what I did was I used a HHG ATC Holder inline with the Power Wire and removed the rubber cap (since it is too big to fit over the breaker)

and then I simply bought a ACB-20 ATC Style Breaker and plugged it right in to the Fuse Holder...

Nice Clean and Easy... Use a 30 AMP breaker for 3-4 axle applications and a 20 AMP self resetting breaker for 1-2 axle applications.
I would leave the original 30 AMP fuse alone and just wire in the supplemental circuit breaker.



