13 colors
ST Wiring Supply
Installation supplies
Wire and materials for a factory-quality install: the same ones we use in our harnesses, by the meter and by the piece.
TXL wire by the meter
16 · 18 · 22 AWG
14 colors
ST Wiring Supply
See automotive wire
Automotive wire
Thin-wall TXL wire by the meter in 16, 18 and 22 AWG, in the color code we use in SpeedTech harnesses.
ST Wiring Supply
See connectors and terminals
Connectors & terminals
Connectors, terminals and pins to build or repair your harness.
New
Connectors & terminals
VW / Audi 4-pin coil connector
Terminals and seals included · ref. 1J0 973 724
New
ST Wiring Supply
View heat shrink & protection
Heat shrink & protection
Heat shrink, braided sleeving and tape to protect and organize your wiring.
New
Heat shrink & protection
Expandable PET braided sleeve
Black with blue tracer · 8, 16 & 25 mm
8 mm16 mm25 mm
New
Coming soon to the shop
More supplies on the way
Fuses & relays
Need it now? Ask us
Fuses, fuse holders and relays to power your system safely.
Tools
Need it now? Ask us
Tools to strip, crimp and finish your connections.
ST color codeOne color
One color
for every signal
These are the colors we use in our harnesses. Use the same code in your install and any technician will be able to diagnose it in minutes.
| Color | Use in the ST harness | 16 AWG | 18 AWG | 22 AWG |
|---|---|---|---|---|
| Black | VR− / Hall / clutch in the ST harness | — | — | $0.76 |
| Brown | Grounds (GND · SGND) in the ST harness | $1.20 | $1.00 | $0.76 |
| Red | +12 V, 5 V reference and VR+ in the ST harness | $1.20 | $1.00 | $0.76 |
| Orange | Auxiliary / general use | — | — | $0.76 |
| Yellow | Coils in the ST harness | — | — | $0.76 |
| Dark green | Auxiliary / general use | — | — | $0.76 |
| Dark blue | Auxiliary / general use | — | — | $0.76 |
| Purple | Fan in the ST harness | — | — | $0.76 |
| Gray | Tachometer in the ST harness | — | — | $0.76 |
| Light blue | Fuel pump in the ST harness | — | — | $0.76 |
| Light green | Intake air temperature (IAT) in the ST harness | — | — | $0.76 |
| Pink | Coolant temperature (CLT) in the ST harness | — | — | $0.76 |
| Tan | TPS in the ST harness | — | — | $0.76 |
| White | Injectors in the ST harness | — | $1.00 | — |
Prices per meter in USD. Tap a price to choose that color and gauge.
Harness-grade quality
The same TXL wire we use in our harnesses.
The same TXL wire we use in our harnesses.
By the meter
Buy exactly what you need, color by color.
Buy exactly what you need, color by color.
With your order
Ships together with your ECU or accessories.
Ships together with your ECU or accessories.
Advice
We'll help you put together your install's shopping list.
We'll help you put together your install's shopping list.
FAQ
About our supplies
Got another question? Message us and we'll reply within minutes.
How do I buy wire by the meter?
Open the gauge you need, choose the color and the number of meters. Each color becomes its own line in your order, so you can mix several colors and gauges in one purchase.
Which gauge do I need?
As a guide: 22 AWG for sensor signals and low-current outputs; 18 AWG for injectors, coils and relays; 16 AWG for +12 V power, power grounds and the fuel pump. If you're not sure, message us and we'll help you put the list together.
Is it the same wire you use in SpeedTech harnesses?
Yes. We sell the same TXL automotive wire we use in our own installs, with the same color code.
Do you sell bulk quantities or full spools?
Yes. For shops and bulk quantities, message us on WhatsApp for a quote.
Building a harness from scratch?
Tell us about your build and we'll help with the list of wire, gauges and colors for your install.