Corrosion clobbered the instrument panel and mating connector beyond repair on my BX25. I ordered a new panel for $290 from Kubota and a new connector with 10 inches of leads (called a pigtail) from Findpigtails.com. Pigtail part number was F21B16 and it cost $80.
It took about two hours to splice in the new pigtail. I used two layers of heatshrink per connection.
Note that the connector terminals are referenced with numbers on the schematic but letters are used on the instrument panel.
I strongly suggest that you cut and splice one wire at a time as I had mediocre light so the colors below may be off!
I suggest that you cut off the four unused pigtail wires since they could be conneted to something in the panel.
Here's the wire colors and terminal (note that I had mediocre light):
Terminal
Position Color (yours may vary so again cut and splice one wire at a time!)
A -- empty (cut off pigtail wire)
B -- RED/GRN
C -- BRN/GRY
D -- BLU (connector locking tab at this location)
E -- GRN (connector locking tab at this location)
F -- empty (cut off pigtail wire)
G -- BLU/RED
H -- WHT/RED
J -- RED/YEL
K -- empty (cut off pigtail wire)
M -- RED/WHT
N -- WHT/BLU
P -- YEL/GRN
Q -- empty (cut off pigtail wire)
S -- BLK
A huge, gigantic THANK YOU for turning me on to "Findpigtails.com".
Where they even verified your part number of F21B16, still costing $80 was the correct one.
After going through their chat & sending picture of mine.
While after cheapest shipping & tax, $86.59 is a lot to pay for female connector and 10 inch wires to splice in for repair.
My BX25DLB connector, has blank spaces for unused terminals.
With all 16 spaces, including the 12 used terminals & 4 empty ones.
Completely cemented into connector with a white epoxy.
With no way to get highly corroded blue, always battery hot terminal, out to clean.
Or simply replace that terminal.
Kubota now only offering a whole wiring harness as best solution,
for $611.49. yikes!
I’m already positive that I will use “Findpigtails.com" to buy other broken connectors, which is just part of fixing a great many things.
But now, thanks to you & your post, I now have a very useful source of new replacement connectors.
Thanks again!