Electrical Accessories

Electrical Accessories: the small wiring parts that keep everything else running

Electrical accessories cover the connectors, voltage control and switches that tie the rest of your engine electrics together. This is the stuff that lives between the big components: the plug that mates an engine management unit to a harness, the regulator/rectifier that keeps charging voltage in check, and the handlebar or dash switch that actually breaks the circuit. None of it makes headlines, but a bad connector pin or a failed rectifier will strand a build just as fast as a dead fuel pump.

You fit these parts either to replace something that has failed, or to finish a wiring job cleanly - a proper plug-and-pin set instead of a butchered splice, or a fresh kill switch that doesn't stick. Do it right once and you stop chasing intermittent gremlins later.

What ThreePiece stocks

This is a focused category: 3 products in stock right now, spanning 3 brands - Haltech, Baja Designs and Bike Master. Prices currently run from about $12 to $166, which is the live range for what's on the shelf, not a standing offer.

The stocked items show what that spread covers. The Haltech NEXUS R3 Plug & Pin Only (HT-030013) sits at the top end, aimed at anyone wiring into a NEXUS unit. The Baja Designs DC Unwired Regulator/Rectifier (122003) handles charging-side voltage control in the middle of the range. At the bottom, the Bike Master Kill/Horn Button (201080) is the cheap, high-use switch you replace without a second thought.

How to choose

The choice here is mostly about what job you're doing, not brand loyalty. If you're building or repairing a harness for an engine management system, you want the connector and pin set - buy it matched to your unit so you're not forcing terminals into the wrong housing. If your charging system is misbehaving, the regulator/rectifier is the piece to look at. And if it's a stuck or worn control, a switch swap is the quick, low-cost fix. Price tracks that difference: complex electronics-adjacent parts cost more than a molded button.

What else you'll want with it

Electrical work rarely stands alone. If you're chasing charging problems, check Batteries at the same time - a tired battery masks and mimics rectifier faults. When you're wiring fuel delivery, our Fuel Pumps section pairs with the same connectors. For the plumbing that runs alongside a harness, Fittings and Adapters cover the mechanical side, and Radiators often share bay space with the electrics you're routing. Everything here lives under the wider Engine Components section if you want to browse the full parts range.

Fitment and ordering

Fitment data isn't listed for these three items, so match part numbers and connector types to your own setup before you buy - if you're unsure, call our fitment line at 813-535-5801 or reach us through contact us. Every order ships free, and Affirm and Katapult financing are available through our financing options. Common questions are answered on the FAQ page.

Electrical Accessories: the small wiring parts that keep everything else running

Electrical accessories cover the connectors, voltage control and switches that tie the rest of your engine electrics together. This is the stuff that lives between the big components: the plug that mates an engine management unit to a harness, the regulator/rectifier that keeps charging voltage in check, and the handlebar or dash switch that actually breaks the circuit. None of it makes headlines, but a bad connector pin or a failed rectifier will strand a build just as fast as a dead fuel pump.

You fit these parts either to replace something that has failed, or to finish a wiring job cleanly - a proper plug-and-pin set instead of a butchered splice, or a fresh kill switch that doesn't stick. Do it right once and you stop chasing intermittent gremlins later.

What ThreePiece stocks

This is a focused category: 3 products in stock right now, spanning 3 brands - Haltech, Baja Designs and Bike Master. Prices currently run from about $12 to $166, which is the live range for what's on the shelf, not a standing offer.

The stocked items show what that spread covers. The Haltech NEXUS R3 Plug & Pin Only (HT-030013) sits at the top end, aimed at anyone wiring into a NEXUS unit. The Baja Designs DC Unwired Regulator/Rectifier (122003) handles charging-side voltage control in the middle of the range. At the bottom, the Bike Master Kill/Horn Button (201080) is the cheap, high-use switch you replace without a second thought.

How to choose

The choice here is mostly about what job you're doing, not brand loyalty. If you're building or repairing a harness for an engine management system, you want the connector and pin set - buy it matched to your unit so you're not forcing terminals into the wrong housing. If your charging system is misbehaving, the regulator/rectifier is the piece to look at. And if it's a stuck or worn control, a switch swap is the quick, low-cost fix. Price tracks that difference: complex electronics-adjacent parts cost more than a molded button.

What else you'll want with it

Electrical work rarely stands alone. If you're chasing charging problems, check Batteries at the same time - a tired battery masks and mimics rectifier faults. When you're wiring fuel delivery, our Fuel Pumps section pairs with the same connectors. For the plumbing that runs alongside a harness, Fittings and Adapters cover the mechanical side, and Radiators often share bay space with the electrics you're routing. Everything here lives under the wider Engine Components section if you want to browse the full parts range.

Fitment and ordering

Fitment data isn't listed for these three items, so match part numbers and connector types to your own setup before you buy - if you're unsure, call our fitment line at 813-535-5801 or reach us through contact us. Every order ships free, and Affirm and Katapult financing are available through our financing options. Common questions are answered on the FAQ page.