Thanks to all who have responded to my query re Kioti fuse box: AWSubie, Dave M7040, Boomer 1025, RjCorazza and TnAndy. Appreciated.
First, it is clear that no one has had success fiddling inside that fuse box: that was my problem.
Second, I do like the idea of the add-a-circuit. I am wondering if I will be adding a new load, on top of the load already on that circuit, i.e., will I
be at risk of overloading that original circuit? My main requirement will be to have a live cigarette lighter type outlet on the rear of the tractor,
to supply power to things like small water pumps. (Actually to transfer maple sap from barrels to bigger tanks). My water pump is from an RV supply house.
My load could be variable, but I do have the option of shutting down all other electrical use if overloading.
Thoughts?
Thx.
To try and help your understanding how the add a circuit is possibly working remove a fuse.
If you take a test light around $10 at auto supply places
and after connecting the alligator clip to the battery negative terminal, touch where both ends of the removed fuse connected.
One of these connection points will be dead. The other will have power even without the fuse.
The fuse box will have one or two power supplies. One live with the key on the other live all the time.
The fuse box is like the trunk of a tree with branches going off from it. The same is happening in the fuse box.
If you connect the power end of the add a circuit device to the side of the fuse box which is powered even without the fuse, You have not added any additional electrical load to let us say the headlight circuit.
Alternatively, if the electrical load from your pump is large, perhaps you don't want the key switch to deal with that large of an additional load.
Then you would use a relay.
The relay could be connected directly to the battery or starter large + terminal. The the relay output goes to power your pump.
The control circuit for the relay could be powered by the key side of your fuse panel with the add a circuit device. Now the add a circuit is only adding less than 1 amp of electrical load to the fuse box supply wiring.
If you connected the add a circuit to a fuse controlled by the key switch, then the pump would have no power until the key switch was on.
The power side of the relay which you connect to the battery or starter terminal should have an in line fuse to protect the wiring in case of pump failure or wire chaffing.
Dave M7040