Question about 1996 Yamaha YZF 600 R thunder cat
The neutral light on most Yamahas works by grounding through a neutral switch which is mounted in the engine case. When the circuit is grounded the light comes on and the interlock is satisfied.
So check the wiring harness on the left side of engine for any disconnected or damaged wire.
The neutral light circuit is usually a single sky blue wire. If you find it and all looks normal...unhook the lowest connector and ground the upper sky blue wire and see if the light operates...if it now works....your neutral switch is probably defective....or the brass "neutral point" that rotates with the shift cam shaft is worn and no longer making contact.
Posted on Mar 21, 2011
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Posted on Jan 02, 2017
Hi and welcome to FixYa,
A way to test the neutral switch is to check its continuity to ground. At neutral, it should read as 0 ohms. Additionally, Suzuki uses a dual diode to interlink the clutch and neutral safety inlocks. If the neutral switch checks out, this dual diode may have to be checked likewise.
Good luck and thank you for asking FixYa.
Posted on Aug 22, 2009
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