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BMW Auxiliary Power Y-Splitter Harness — Dual Ampseal 12V Output | Ref: 8330043 / 611656 Type 1
BMW Auxiliary Power Y-Splitter Harness — Dual Ampseal 12V Output | Ref: 8330043 / 611656 Type 1
SKU:BMW YS-1-22
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BMW Auxiliary Power Y-Splitter Harness — 12V Dual Ampseal Output Type 1
Pattern equivalent of BMW part number 8330043 / 611656. Plugs directly into the auxiliary power connector on your BMW's wiring loom and splits to two individual Ampseal connectors, providing a clean switched 12V power and earth supply to two accessories simultaneously.
How it works
BMW motorcycles are fitted with a switched auxiliary power socket on the loom — typically located at the front left frame or under the tank fairing depending on model. This harness plugs into that existing connector and splits the output into two independent Ampseal outlets. Each outlet provides 12V positive and earth only — there is no signal connection. Mating Ampseal connectors are included so you can crimp directly to the wiring of the accessories you want to power.
- Plugs into the BMW auxiliary loom connector — no cutting, no splicing
- Splits to two Ampseal outputs — run two accessories from one socket
- Switched ignition feed — powers off with the ignition, no battery drain
- 22 AWG weatherproof wiring — built for long-term motorcycle use
- Mating Ampseal connectors included — crimp directly to your accessories
- Power and earth supply only — no signal wires, no CAN bus interference
What can I power with it?
Any 12V accessory that uses an Ampseal connector or can be wired to one — for example:
- USB chargers and power banks
- GPS / sat nav units
- Heated grips or heated clothing controllers
- Dashcams and action cameras
- Intercoms and communication systems
Important: this harness supplies power and earth only. There is no signal connection. It will not interfere with CAN bus, ABS, traction control or any other electronic system on the bike.
Installation notes
Difficulty: Easy. Estimated time: 10–15 minutes.
- Locate the auxiliary connector on your loom (front left frame or under tank fairing — varies by model and year)
- Plug the harness in — no tools required for the main connection
- Crimp the included mating Ampseal connectors to your accessory wiring
- Verify polarity with a multimeter before connecting — BMW wire colours vary between models and years
Note: connector location and wire colours vary by model and year. Always verify your plug location and polarity before connecting accessories. A 22 AWG feed is suitable for low-current accessories — for high-current loads such as heated clothing systems consider a direct battery feed with inline fuse instead.
What's in the box
- 1 x BMW auxiliary power Y-splitter harness (22 AWG, part ref 8330043 / 611656)
- Mating Ampseal connectors for both outputs
Compatible BMW models
| BMW Code | Model | Years |
|---|---|---|
| K50 | R 1250 GS | 2019 — |
| K51 | R 1250 GS Adventure | 2018 — |
| K50 | R 1200 GS | 10/2011 — 12/2018 |
| K51 | R 1200 GS Adventure | 09/2012 — 12/2019 |
| K52 | R 1200 RT / R 1250 RT | 01/2013 — 12/2019 |
| K53 | R 1200 R / R 1250 R | 11/2013 — 12/2019 |
| K54 | R 1200 RS / R 1250 RS | 06/2014 — 12/2019 |
| K25 | R 1200 GS | 12/2002 — 12/2012 |
| K25 | R 1200 GS Adventure | 03/2005 — 07/2013 |
| K25 | HP2 Sport | 08/2004 — 11/2008 |
| K26 | R 900 RT / R 1200 RT | 11/2003 — 06/2014 |
| K27 | R 1200 R | 11/2005 — 07/2014 |
| K28 | R 1200 ST | 05/2003 — 11/2007 |
| K29 | R 1200 S / HP2 Sport | 11/2004 — 07/2010 |
| K21 | R nineT | 01/2013 — 12/2019 |
| K22 | R nineT Pure | 12/2015 — 12/2019 |
| K23 | R nineT Scrambler | 09/2015 — 12/2019 |
| K32 | R nineT Racer | 12/2015 — 07/2019 |
| K33 | R nineT Urban G/S | 03/2016 — 12/2019 |
| K40 | K 1200 S / K 1300 S | 04/2003 — 09/2015 |
| K43 | K 1200 R / Sport / K 1300 R | 03/2004 — 07/2015 |
| K44 | K 1200 GT / K 1300 GT | 11/2004 — 10/2010 |
| K42 | HP4 | 09/2011 — 07/2014 |
| K46 | S 1000 RR | 09/2008 — 11/2018 |
| K47 | S 1000 R | 02/2013 — 12/2019 |
| K49 | S 1000 XR | 05/2014 — 11/2019 |
| K48 | K 1600 GT / K 1600 GTL | 01/2010 — 12/2019 |
| K61 | K 1600 Bagger | 01/2017 — 12/2019 |
| K80 | F 750 GS | 10/2016 — 12/2019 |
| K81 / K82 | F 850 GS | 10/2016 — 12/2019 |
| K83 | F 900 R | 11/2018 — 12/2019 |
| K84 | F 900 XR | 11/2018 — 12/2019 |
| K70 | F 700 GS | 06/2011 — 12/2017 |
| K71 | F 800 S / ST / GT | 12/2004 — 09/2019 |
| K72 | F 650 GS / F 800 GS | 10/2006 — 01/2018 |
| K75 | F 800 GS Adventure | 05/2012 — 12/2017 |
| K73 | F 800 R | 12/2005 — 09/2019 |
| R13 | F 650 GS / GS Dakar | 02/1999 — 10/2007 |
| K14 | F 650 CS | 11/2000 — 07/2005 |
| K18 | C 600 Sport / C 650 Sport | 02/2011 — 12/2019 |
| K19 | C 650 GT | 01/2011 — 12/2019 |
| R13 | G 650 GS / G 650 GS Sertão | 02/2008 — 11/2014 |
| 259 | R 850 GS / R 1100 GS | 04/1993 — 07/2006 |
| R21 | R 1150 GS / R 1150 GS Adventure | 09/1998 — 09/2005 |
| 259R / R28 | R 850 R / R 1100 R / R 1150 R / Rockster | 09/1993 — 07/2007 |
| 259 / R22 | R 850 RT / R 1100 RT / R 1150 RT / R 1150 RS | 05/1994 — 03/2006 |
| 259 | R 1100 S / R 1100 RS | 01/1992 — 07/2005 |
| 259C | R 850 C / R 1200 C / R 1200 C Montauk / R 1200 C Independent | 04/1996 — 10/2004 |
| K30 | R 1200 CL | 10/2001 — 07/2004 |
| K589 | K 1100 RS / K 1100 LT / K 1200 RS / K 1200 LT | 06/1989 — 07/2008 |
| K41 | K 1200 GT / K 1200 RS | 03/2000 — 07/2005 |
| C1 | C1 | 10/1999 — 04/2003 |
Always verify the auxiliary connector location on your specific model before ordering. Connector location (front left frame or under tank fairing) and wire colours vary by model and year. When in doubt, consult your service manual or dealer parts diagram.
UK dispatch & returns
Dispatched same working day from our UK warehouse. Free UK delivery from £40 (Royal Mail Tracked 24, 1–2 business days). Free Special Delivery by 1pm from £50. 30-day no-quibble returns.
Sold by Redline Superbikes via O2Eliminators.com — established UK supplier of motorcycle electrical parts.
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