Wire / Switches / Connectors
Wire, switches, and connectors for LED installs, automotive builds, LED strip runs, and hobby electronics — everything needed to complete the electrical side of a project beyond the LEDs themselves. Five subcategories cover the full installation toolkit:
- Wire — 18 varieties from heavy-duty 16 AWG paired automotive wire down to 30 AWG Kynar wire-wrap wire for PCB rework, model railroad detail wiring, and tight-space installations. 18 AWG single-conductor in black, red, blue, and white covers most LED and automotive accessory runs. 30 AWG Kynar has a Teflon jacket — thin, flexible, and heat-resistant, making it the standard choice for hand wire-wrapping, LEGO lighting, and N-scale/Z-scale model railroad work where standard wire is too stiff to route cleanly.
- Wire Connectors / Splicers — push-in T-junction clamps that accept 2, 3, or 5 wires (12–28 AWG) with no tools and no soldering. Ideal for adding a branch to an existing circuit, connecting LED leads at a junction, or splicing wires in tight spaces where heat-shrink crimping is impractical.
- Switches — inline barrel connector switches for power supply leads, miniature latching slide switches (SPDT), and mini toggle switches (SPDT). The barrel connector switch drops into any DC power supply lead for instant on/off control. Slide and toggle switches suit panel-mount applications: indicator control panels, diorama lighting, and custom enclosures.
- 3528 LED Strip Connectors — pigtail connectors, strip joiners, and barrel power connectors for 8 mm single-color 3528 strip. Use these to power a strip from a DC supply, join two strip segments end-to-end, or run a pigtail lead to a switch or fuse without cutting into the strip itself.
- 5050 LED Strip Connectors — the same connector family for 10 mm single-color and RGB 5050 strip. Includes pigtail, joiner, barrel power connector, RGB 4-conductor joiner, and the universal spring-clamp quick connector that fits both 3528 and 5050 strip. The 4-pin RGB header (2.54 mm pitch) adapts a strip end to a standard dupont connector for connecting to a controller board or RGB decoder.
Frequently Asked Questions
It depends on current draw and run length. For individual LEDs and small clusters (under 500 mA total), 22–26 AWG is sufficient and easy to route. 18 AWG is a good all-purpose choice for most 12V LED accessory runs — it handles up to ~7 A and is flexible enough for most automotive and hobby installs. 16 AWG paired wire suits higher-current runs (LED strips, power supply feeds) or longer wire runs where voltage drop matters. For fine detail work — model railroad layouts, PCB wire-wrapping, LEGO lighting — 28–30 AWG Kynar is the right choice: thin, flexible, and Teflon-jacketed for heat resistance.
Kynar wire (also called wire-wrap wire) is a small-gauge solid-copper wire with a thin Teflon (PVDF) jacket. The Teflon insulation is thinner and more heat-resistant than PVC, so the wire takes up far less space than standard hookup wire of the same gauge. It is the standard choice for: N-scale and Z-scale model railroad wiring where standard 18 AWG is too stiff to route through structures; LEGO and miniature lighting kits where wire needs to stay hidden inside tiny gaps; PCB wire-wrap and point-to-point rework; and any build where wire stiffness or bulk is a problem. 30 AWG Kynar is rated for up to ~500 mA — more than enough for individual LEDs and small pre-wired LED clusters.
For most applications, any SPDT (single-pole double-throw) or SPST (single-pole single-throw) switch rated for the supply voltage and current will work. The inline barrel connector switch is the easiest option for DC power supply leads — it plugs directly into the barrel jack line with no wiring required. The mini toggle and slide switches are panel-mount types: drill a hole in your enclosure or panel, snap the switch in, and wire the LED circuit through it. For switching multiple LED channels independently (e.g. a control panel), use one switch per channel. Make sure the switch current rating exceeds your total LED current — 1 A is sufficient for most single-LED and small-cluster circuits.
The numbers refer to the chip package size used in the LED strip: 3528 strips are 8 mm wide, 5050 strips are 10 mm wide. The connectors are not interchangeable — the contact spacing and channel width differ. Always match the connector to your strip width. Both types follow the same connector family design (pigtail, joiner, barrel power), so the installation steps are identical — just make sure you order the correct width. RGB 5050 strips require a 4-conductor connector; single-color strips use a 2-conductor connector.
Yes. The push-in strip connectors (pigtail, joiner, and barrel power types) use a spring-clamp or snap-fit mechanism that grips the copper pads on the strip end without any soldering. The universal spring-clamp quick connector accepts both 3528 and 5050 strip widths. For reliable contact, make sure the strip is cut cleanly on the marked cut line and that the copper pads are fully exposed before inserting into the connector. Solderless connectors are fine for permanent installs in low-vibration environments; for automotive or high-vibration applications, soldering the strip end and using heat-shrink over the joint is more reliable long-term.
T-junction connectors (also called push-in wire clamps or lever connectors) use an internal spring-loaded contact to grip bare wire ends without crimping or soldering. Strip about 10 mm of insulation from each wire end, push into the connector port, and the spring holds it. The T-junction style adds a branch port so you can split one incoming wire into two or more outgoing wires — useful for distributing power to multiple LEDs from a single supply run, or adding an LED branch to an existing circuit without cutting and re-splicing. Rated 12–28 AWG, suitable for 12V LED circuits up to several amps depending on port count.