NPP control made simple.
I started off using a basic fuse tap available just about everywhere for a few bucks.
Top fuse is for the new circuit, bottom for the existing circuit. The far tang provides the power for the new circuit.
The two ports on the left are connected, the two on the right are not. This allows for 2 fuses to control 2 circuits.
Split it open to reveal the basic innards. The red wire is connected to the far tang through a fuse. That's where it will stay.
Remove the small tang.
Solder a new wire onto the small tang removed from the tap.
The tang can now be reinserted back into the tap. I had to notch the plastic to allow the new wire to fit into the bottom of the tap. You can see the new direction of current flow.
Liberal application of epoxy just to hold things together. I clamped the two halves of the case together until the epoxy was set.
Two halves epoxied together and a little shrink wrap for support.
Only the top is to be used with a fuse. The bottom openings are epoxied closed as this side is not used anymore.
Finished product. If done correctly, current will flow in one tang, through the fuse, out one wire to a switch in your location of choice, and back through the other wire straight to the other tang. Simple two wire NPP control.
Cheers.
Would have just bought it.
Forgot to mention: Thanks OP (Chippawa) for taking the time to share some good work.
I
Last edited by Need4more; Mar 24, 2026 at 09:15 PM.
Would have just bought it.
just ordered mine! Thanks!
Would have just bought it.
Forgot to mention: Thanks OP (Chippawa) for taking the time to share some good work.
I
The Best of Corvette for Corvette Enthusiasts









