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  #1  
Old 08-24-2014, 07:30 PM
hdtvluvr hdtvluvr is offline
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Need wiring assistance on Bobcat Walkbehind

Model 930300
14 HP Kohler

This is a very old mower that I purchased used a few years ago. I am wanting to modify the starter circuit and add a secondary relay to power the starter solenoid. I have attached the Bobcat schematic, a photo of the solenoid and an image of the desired circuit. The desired circuit shows one wire from the switch and only one wire connection to the solenoid but I have 2 wires from the switch.

Any help is appreciated.
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  #2  
Old 08-24-2014, 08:08 PM
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Restrorob Restrorob is offline
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Quote:
Originally Posted by hdtvluvr View Post
The desired circuit shows one wire from the switch and only one wire connection to the solenoid but I have 2 wires from the switch

Choose which ever wire that's activated in the start position and hook it to your relay/solenoid, Leave the other wire hanging..... You won't need it the way your wiring......
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Old 08-24-2014, 08:25 PM
hdtvluvr hdtvluvr is offline
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Sorry, I posted the incorrect new schematic. The old wiring had both wires (Black and Yellow shown in the Harness Solenoid section of the above schematic) connected to the small posts on the solenoid. I want to add the new relay to reduce the current in the switch circuit.

How should I wire it now? I assumed power traveled down the yellow and the black was grounded back at the switch thus completing the circuit and activating the solenoid. But I just can't seem to fathom how to wire in the new relay in order to activate the solenoid with lower amperage.

Would I connect the yellow to 86 on the relay, the black to the ground side of the solenoid?
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Old 08-24-2014, 08:36 PM
hdtvluvr hdtvluvr is offline
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Here's the schematic in a pdf so it can be viewed larger.

Further looking at everything, I think the yellow should go to 86 on the relay and the black should be the relay ground. This would provide the least amperage through the relay and the switch circuit. The Solenoid should then be grounded to the frame.

Is this correct?
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File Type: pdf Bobcat Schematic 2.pdf (49.4 KB, 5 views)

Last edited by hdtvluvr; 08-24-2014 at 08:41 PM.
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  #5  
Old 08-25-2014, 05:49 AM
dieselss dieselss is offline
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So your mower already has a solenoid, and you want to add that small relay to the start side?
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  #6  
Old 08-25-2014, 07:38 AM
hdtvluvr hdtvluvr is offline
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So your mower already has a solenoid, and you want to add that small relay to the start side?
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Yes. The little relay will draw less current though the switch circuit.
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Old 08-25-2014, 10:11 AM
dieselss dieselss is offline
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The current draw through the factory started solenoid is what?
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Old 08-25-2014, 10:21 AM
hdtvluvr hdtvluvr is offline
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The current draw through the factory started solenoid is what?
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Well I'm not sure but it was enough to melt (and blow) the fuse. I've never seen a fuse melted before.
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Old 08-25-2014, 10:32 AM
dieselss dieselss is offline
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Then something else is wrong
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Old 08-25-2014, 11:52 AM
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BigFish BigFish is offline
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The hookup in yer post#3 is the right way to wire in an aux. starter relay to eliminate sluggish start solenoids etc.
The yellow wire, got no idea, since yer Bobcat "schematic" is only a harness connection diagram.
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