A lesson I took away from my Ranger is that I am going to add ‘stuff’ and that stuff, over time, makes for a mess of wires! Bound and determined to better with my RZR, I searched for a single box that would house my fuses, relays, and grounds. No such thing (a few come close...). So I made my own. Got the idea from a Jeep forum I stumbled on. So here’s what I did:
Step 1 – buy some hardware. I settled on a Bussman 15303-5 Rear Terminal Mini fuse and Relay (RTMR) panel. It is made to accept Metri-Pack 280 terminals and plugs and the holes are spaced to accept ATM mini fuses and 301 Micro relays. This is the back of the panel where all the wiring is done.
This is the front side where the relays and fuses plug into.
Here is my plan of attack. Three relay + fuse circuits, and three fuse-only circuits. Room to expand later if needed. Please excuse the non-standard symbols and sloppy computer work.
Next, I made up the wires. The ends that go into the RTMR are the Metri-Pack female terminals and the ends that go to the devices (winch, radio, lights, etc) are Weather Pack 280 terminals. I crimped and soldered all the connectors. More about that other terminal block in the picture later.
Wasn’t real crazy about how I was going to handle the needed ground wires. I am not a big fan of chassis grounds - they are fine when done right, but I prefer to buss them together back to the battery. I had bought a ground block from Black Rino Performance but once I had it in my had, I was disappointed. Really wanted to have everything on one block. I hit on the idea of using a home fuse panel terminal strip so I picked one up and after a little Dremel and file work, got it to fit in the RTMR. Happy camper!
This is what the wires look like plugged in – and my ground buss. The coil of smaller red wires are the relay trigger (post #86 on the relays) wires that go the dash switches. I coated all the plugs and and terminals (except for where the terminals actually make contact) with dielectric grease. The green things are plugs that seal up the unused holes in the RTMR. Between the plugs and the grease, it should be pretty much water proof.
Finished product. All pigtails have female connectors and are color coded. I will have to install the Weather Pack male connectors and shrouds on the devices I install. Each pigtail (except the trigger wires) has a power and ground wire thus eliminating device chassis grounds. RTMR will mount to the inside passenger firewall on 1” nylon standoffs. Power and ground from the aux battery will be 8 Gauge SXT cable.
Step 1 – buy some hardware. I settled on a Bussman 15303-5 Rear Terminal Mini fuse and Relay (RTMR) panel. It is made to accept Metri-Pack 280 terminals and plugs and the holes are spaced to accept ATM mini fuses and 301 Micro relays. This is the back of the panel where all the wiring is done.

This is the front side where the relays and fuses plug into.

Here is my plan of attack. Three relay + fuse circuits, and three fuse-only circuits. Room to expand later if needed. Please excuse the non-standard symbols and sloppy computer work.

Next, I made up the wires. The ends that go into the RTMR are the Metri-Pack female terminals and the ends that go to the devices (winch, radio, lights, etc) are Weather Pack 280 terminals. I crimped and soldered all the connectors. More about that other terminal block in the picture later.

Wasn’t real crazy about how I was going to handle the needed ground wires. I am not a big fan of chassis grounds - they are fine when done right, but I prefer to buss them together back to the battery. I had bought a ground block from Black Rino Performance but once I had it in my had, I was disappointed. Really wanted to have everything on one block. I hit on the idea of using a home fuse panel terminal strip so I picked one up and after a little Dremel and file work, got it to fit in the RTMR. Happy camper!

This is what the wires look like plugged in – and my ground buss. The coil of smaller red wires are the relay trigger (post #86 on the relays) wires that go the dash switches. I coated all the plugs and and terminals (except for where the terminals actually make contact) with dielectric grease. The green things are plugs that seal up the unused holes in the RTMR. Between the plugs and the grease, it should be pretty much water proof.

Finished product. All pigtails have female connectors and are color coded. I will have to install the Weather Pack male connectors and shrouds on the devices I install. Each pigtail (except the trigger wires) has a power and ground wire thus eliminating device chassis grounds. RTMR will mount to the inside passenger firewall on 1” nylon standoffs. Power and ground from the aux battery will be 8 Gauge SXT cable.


