Stinger SGW991 18GA 9-Conductor Speed Wire, 30m Roll
Nine individually jacketed EIA colour-coded 18GA conductors in a single flexible outer jacket hyper-twist construction, 41-strand count, perfect for 4-channel amplifier installations, head unit wiring, and automotive electronics.
Product Overview
The Stinger SGW991 is a 30-metre roll of 9-conductor speed wire, combining nine individually jacketed 18GA wires in a single highly flexible outer jacket. The hyper-twist construction delivers excellent flexibility for routing through tight spaces, while EIA-standard colour coding matches the wiring colours found on aftermarket head units and audio devices reducing installation time and wiring errors.
The 9-conductor format is ideal for 4-channel amplifier speaker installations plus a remote turn-on wire, ECU wiring, engine sensor harnesses, and other multi-wire automotive electronics applications.
Features & Benefits
- 9 individually jacketed EIA-standard colour-coded conductors in a single flexible jacket
- 18GA wire — 41-strand count for flexibility
- EIA colour coding matches aftermarket head unit and audio device wiring
- Hyper-twist outer jacket — highly flexible, easy to route
- Suits 4-channel amplifier speaker installations plus remote turn-on
- Also suited to ECU wiring, engine sensors, and automotive electronics
- 30-metre roll — workshop and installer stock
Technical Specs
| Specification |
Detail |
| SKU / Part Number |
SGW991 |
| Brand |
Stinger |
| Wire Gauge |
18 AWG (18GA) |
| Conductors |
9 × individually jacketed, EIA colour-coded |
| Strand Count |
41 per conductor |
| Outer Jacket Colour |
Blue |
| Length |
30m roll |
| Colour Coding |
EIA industry standard |
| Construction |
Hyper-twist |
Compatible With / Goes Well With
Direct Vehicle Fit:
- Universal — suitable for 4-channel amplifier installations, head unit wiring, and automotive electronics
Goes Well With:
- Stinger SK4241 / SK4681 4-channel amplifier wiring kits
- Aftermarket head units and 4-channel amplifiers
- Stinger SGW441 (if available — 4-conductor variant for 2-channel builds)
Frequently Asked Questions
What is speed wire and why is it useful?
Speed wire combines multiple individually jacketed conductors inside a single outer jacket, allowing installers to route all wires for a given run (e.g., all four speaker channels plus remote turn-on) through the vehicle in a single cable pass. EIA colour coding makes termination fast and error-free, significantly cutting installation time.
What does 9-conductor suit in a car audio installation?
A 4-channel amplifier requires eight speaker connections (four channels × two wires per channel) plus a remote turn-on wire — totalling nine conductors. The SGW991's 9-conductor format is matched exactly to this common installation requirement.
Is 18GA suitable for speaker wiring?
Yes, for speaker signal wiring in standard car audio installations — connecting a head unit's amplified outputs or a 4-channel amplifier to door or rear speakers at typical lengths. For high-power amplifier to speaker runs, 16GA or 12GA wire (SPW516BK or SPW512BK) is recommended.
Is the SGW991 suitable for non-audio automotive wiring?
Yes. The EIA colour coding and multi-conductor format are well-suited to ECU wiring, engine sensor harnesses, lighting control wiring, and any application requiring multiple small-gauge conductors routed together.
Is 30m sufficient for most installations?
30m provides enough 9-conductor speed wire for approximately four to six standard 4-channel amplifier installations (typically 5–7m per vehicle), making it a good workshop stock roll.
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