audiomick Posted February 23 Posted February 23 Harpers: https://harpermoto.com/search?q=17768750A&options[prefix]=last
p6x Posted February 23 Posted February 23 On 2/23/2025 at 10:29 PM, audiomick said: I very sure the well-sorted parts suppliers in the USA will have it, or something similar, as well. Expand The major issue there is, after a quick look, most of the pressure switches have no description of the thread, usually NPT, and the pressure threshold at which the light will be triggered. Thanks to Stein-Dinse, we know that the pressure switch has a M12x150 thread, even if they list it as 1,5; the SI normalize way to call it is 150, so there is no confusion for those that have the dot as a decimal separation. In any case, it means a diameter of 12 mm, with a thread pitch of 1.5 mm (1,5mm). M12 is a parallel thread, so you are going to need a washer. @Docc: so here is one drop in replacement: https://www.carbuilder.com/products/oil-pressure-warning-light-switch-m12-x-1-5-5psi?_pos=1&_sid=a72d27301&_ss=r This oil pressure warning light switch is a crucial safety component for your vehicle. It triggers the dashboard oil light when the pressure drops below 5 psi, providing a timely alert to prevent potential engine damage. Featuring an M12 x 1.5 thread and a 1/4" spade connector, it's designed for easy installation and reliable performance. Ensure the longevity and safety of your engine with this essential switch. Triggers Oil Light: Alerts you when oil pressure falls below 5 psi. M12 x 1.5 Thread: Ensures compatibility with various vehicles. 1/4" Spade Connector: Simplifies installation. Maintains Engine Safety: Helps prevent costly engine damage. 1
audiomick Posted February 23 Posted February 23 On 2/23/2025 at 11:13 PM, p6x said: ...when the pressure drops below 5 psi... Expand According to this unit convertor, that is about the same as the Fiat part I posted further up. https://www.unitconverters.net/pressure-converter.html Quote 5 psi = 0.3447378647 bar Expand The one in my link is allegedly for a large number of Fiat tractors. Must be good for a Guzzi. Seriously, though, the crucial question is whether that opening pressure is appropriate. I have no idea, but I could imagine that it would work adequately. Changing the connector on the wire is not a huge problem. Still, at the price of the part from Stein-Dinse I would just get that and save myself the buggerising around.
PhillipLarsen Posted February 24 Posted February 24 https://www.mgcycle.com/index.php?main_page=index&cPath=37_140 17768750 - $11.38 - Oil pressure switch most Guzzis thru 2005 GU17768750 [17768750] : MG Cycle, Moto Guzzi Parts and Accessories available online at MGCycle.com 1 1
audiomick Posted February 24 Posted February 24 (edited) On 2/24/2025 at 12:28 AM, PhillipLarsen said: 17768750 - $11.38 - Oil pressure switch most Guzzis thru 2005 GU17768750 [17768750] : MG Cycle, Moto Guzzi Parts and Accessories available online at MGCycle.com Expand Following that link, I found this under "related products": Quote Superseding GU31768780 and 978854. Oil pressure switch for Nevada Club, Breva 1100, Breva 1200, Griso 1100, Griso 1200 8V 2009 to 2014, Sport 1200, Norge 2006 to 2016, Stelvio 2007 to 2011, 1200 Sport 8V, Bellagio. Thread diameter is 12mm on this item, thread pitch is 1.5. Expand https://www.mgcycle.com/index.php?main_page=product_info&products_id=2387 that looks remarkably similar to the "Fiat tractor" part I linked further up maybe we're onto something here... PS: I searched for the part numbers at Stein-Dinse and got these https://www.stein-dinse.com/de/search.html?grp=&searchStr=31768780 https://www.stein-dinse.com/de/search.html?grp=&searchStr=978854 so apparently there are more than one alternatives out there. Edited February 24 by audiomick
docc Posted February 24 Posted February 24 My 2000 Sport definitely has the "bullet" connector as shown by @PhillipLarsen, not the "spade connector. 1
audiomick Posted February 24 Posted February 24 (edited) On 2/24/2025 at 12:58 AM, docc said: My 2000 Sport definitely has the "bullet" connector as shown by @PhillipLarsen, not the "spade connector. Expand Yes, and of course that would be the best solution. Saves altering the wiring. But if that part is not available or should become not available... Edited February 24 by audiomick 1
docc Posted February 24 Posted February 24 On 2/22/2025 at 5:45 PM, bullionz said: Oil Pressure Switch Hi, the switch on my V11 Sport gave up, it no longer closes the circuit when stopped. I read somewhere here that an automotive one will fit. Anyone have any idea which vehicle and a part No? Expand Talking about the connector, I found mine a bit corroded this evening when I inspected the type. I gave it a shot of Caig DeOxit® and slipped "the boot" back on. A couple things came to mind: 1) If the connection fails, it will act like a bad switch and the oil warning light will not illuminate when the bike is not running, ignition on (before start up and a few seconds after shut down). @bullionz failure could be a connection failure. 2) This connection is rather in the weather and the original connection is bare and unprotected. I added this "boot" from the V11 EV ("California?") side of the range. 5
docc Posted February 25 Posted February 25 GU12717600 https://harpermoto.com/search?q=GU12717600&options[prefix]=last (Gotta love Curtis' wooden inch-ruler with the metal edge, "MADE IN U.S.A." ) Pretty sure my first grade teacher might have smacked my bum with one of those for being tempestuous. Or impetuous. Or worse. 1
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