Go BottomJinma Ignition switch
 | n9911c
Join Date: Oct 2007 Posts: 8 Merced, CA 
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2007-10-02 146470
I have read about the ignition switch failing on the Jinma tractor. I was surprised to see the wiring to the glow plugs go directly to the switch. Why isn't a relay wired into the glow plug system? I checked a ford starter relay last night and to activate the relay only drew 3 amps but to activate one glow plug from a powerstroke engine it drew 24 amps. Wouldn't this be the cause of the switch failing?
Thanks,
Tony
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| RanchHand
Join Date: Apr 2005 Posts: 37 Virginia / North Carolina Line
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2007-10-02 146474
Yes, many have installed a relay to carry the load.
Ronald
Ranch Hand Supply
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 | greg_g
Join Date: Jan 2004 Posts: 1816 Western Kentucky 
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2007-10-03 146489
No. The switch is technically rated to handle the amperage. The main problem with a LOT of the switches on Chinese tractors is that they're not exterior grade. It's stuff you'd ordinarily see inside a car/truck/cab/whatever. When exposed to the elements, they eventually self-destruct. You can pretty much bet that those owners who say they have no switch problems - are the ones that have nice clean/warm/dry places to hide them from Mother Nature.
That said, a glow plug relay is a very good idea on the otherwise hard starting Y85 series engines. I put one on the Y485 in my one year old TS354C. I added a starter relay too. Even at that, I've had ignition switch problems already.
//greg// ....
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| n9911c
Join Date: Oct 2007 Posts: 8 Merced, CA
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2007-10-03 146501
Thanks Ron and Gregg. Not having problems yet but will add a relay after i get the engine done.
Tony ....
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