The mystery of the worklight circuit

[Lockport]

I tried to put a switch on the Worklight circuit, tapping into it at the fuse box with a single pole switch. I have a marine grade cigarette lighter outlet I installed in the rear fender to accomodate a 3PH sprayer that is connecetd to the bullet plugs under the seat . I want to be able to shut it off via a switch on the dash. Much to my surprise, when I went to shut the tractor of, it just kept running. Seems the fuel solenoid doesn't close when there is no power on that circuit. Anyone experience this?

 

[Volfandt]

Seems the fuel solenoid doesn't close when there is no power on that circuit. Anyone experience this?

Yes, many folks have especially when they've wired ROPS ights into that circuit.
Checking for a blown 20amp fuse is one of the 1st troubleshooting steps when the D905 engine won't shutdown via the key. I believe the D902 won't start w/it blown.

I don't know why Kubota would put that switched hot connector under the seat where it's just laying there begging to get used for ROPS lights etc. Only thing I can come up with is that it was meant for an HST temp sender/shutoff for the overseas's markets.
I ran my ROPS lights off of the dash headlight switch. In that way the same switch controls all lights and no additional switch hardware was required. The switch and circuit is rated for the additional load (upto 15 amps) so to me it was a no brainer.....

 

[Lockport]

Only thing I can come up with is that it was meant for an HST temp sender/shutoff for the overseas's markets.,.

That makes sense. Also explains the little light hanging inside, behind the dash. What I will do is run a pair of wires from my marine grade cigarette lighter back to the switch.

You can imagine the look on my face, after all that wiring, when I turned the key off and it just kept running.

 

[escavader]

You can imagine the look on my face, after all that wiring, when I turned the key off and it just kept running.

Same problem with my bx-23.I felt pretty stupid,when i drove it to my friends house[whom is a diesal mechanic],and told him i couldnt shut it down stupid stupid design
ALAN

 

[TGD]

Ok, Now I am confused which is not that hard to do sometimes

Looked under the seat on my BX2230 and I have 3 wires, one is Black, one is red with a black stripe and the other is blue with a white stripe.

I am under the impression that the red/black stripe and black wire were for the work light. and that the Blue/white stripe was for the non-existant (on US tractors) HST temp switch. Is this not correct?

Or, are people using the blue/white wire for lights and this wire is connected to the solinoid circuit fuse?

 

[schrand]

Phil,
You are 100% correct.
Red/Black and Black are designated work light connections, and the Blue/White is for the non-existent HST temp sender, according to the workshop manual wiring diagram. That HST wire just runs back to the unused bulb under the dash.

 

[Lockport]

The red/black and black would actually be power connecters to which the HST overheat sender on the Japanese model would send a charge upon positive signal of overheat down the blue/white to the bulb in the dash. This circuit is keyed on , hence the Kubota work light has a switch right on it. But if you power that circuit off with a switch at the power source it eliminates the ability of the fuel solonoid to close after you turn off the key leaving the tractor running Everyready Bunny Style.

 

[schrand]

see attached clip from wiring diagram...
HST temp switch is not powered, it's just a switch that closes when it gets too hot and completes the circuit to the bulb (grounds it).
But enough of this, I certainly don't want to start an argument.. just finish one! (kidding!!!!)

 

[Lockport]

see attached clip from wiring diagram...
HST temp switch is not powered, it's just a switch that closes when it gets too hot and completes the circuit to the bulb (grounds it).
But enough of this, I certainly don't want to start an argument.. just finish one! (kidding!!!!)

All right. I concede Until next time, amigo!

 

[vrman]

Is there some reason the US models don't need the HST temp monitor?