Electrical tap into B2650HSDC Fuseblock

Concept Automation LLC

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B2650HSDC, BH77
Mar 12, 2026
71
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New England
Hi folks; Just got my used '19 B2650HSDC and adding front and rear LED light bars. Bought the bracket kits from Paul in Canada, quite stout. Trying to figure out a good place to source the 12v. From what I can tell, the Fuse block does not have any good spot to tap into. Only solution to run a feed to the battery ?
 

Bee-Positive

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BX1880, Cab, FEL, Tooth Bar, MMM, QH, Ballast Box
Nov 16, 2022
669
702
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Amsterdam, NY
You can find an electrical diagram the your B2650 in the WSM here.

Looks like you have a few options as well as connecting direct to the battery (what I did because I'm lazy).
1 - tap into the electrical outlets (front and rear)
2 - tap the relay circuit
3 - tap into the front and rear switches

B2650 Electrical 01.jpeg

B2650 Electrical 02.jpeg
 

Russell King

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L185F, Modern Ag Competitor 4’ shredder, Rhino tiller, rear dirt scoop
Jun 17, 2012
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Search “add a circuit “. They make taps that plug into the fuse block
 

Concept Automation LLC

Member

Equipment
B2650HSDC, BH77
Mar 12, 2026
71
20
8
New England
You can find an electrical diagram the your B2650 in the WSM here.

Looks like you have a few options as well as connecting direct to the battery (what I did because I'm lazy).
1 - tap into the electrical outlets (front and rear)
2 - tap the relay circuit
3 - tap into the front and rear switches

View attachment 173099

View attachment 173100
Thanks !! I've found the the outlet is always Hot tho. FYI; Found this very cool Cigar lighter, USB / Phone Charger/ Digital 12v Display, I'm also using as a Ammeter on my B2650 dash. On the B2650 Cab, on the Dash lower right, there are two vacant square holes with covers. Used in the B3620 for Re-Gen . I'm putting toggle switches here for the F&R LED light bars. To get at these and the wiring / relays etc., yup, got to pull the steering wheel. One phillips screw center dash above LCD dash display, one bolt to just loosen under each lower dash bezel end, so not that bad. So I plan to tap into the switched F&R feed to the work light relays, so the fuses in the block will handle them, and accessible. A 21" LED bar is about a 6 amp draw, the 35w Halogen Work-lamp is 3 amp.. A new Feed wire and ground will be run to each new LED bar. So I do not see a wiring overload at the fuse block / relay issue. Have to take the roof off to run the front wires neatly. While I'm at it, friend owns a stereo store, donated a pair of 4" co-ax speakers to replace the cheap wizzer cone ones while the roof is off. What the heck.
 

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Concept Automation LLC

Member

Equipment
B2650HSDC, BH77
Mar 12, 2026
71
20
8
New England
Search “add a circuit “. They make taps that plug into the fuse block
Thanks Russell. If that fuse block and harness was more hidden and not so much under foot, I'd do that. Going to try to get into a feed supplying the work light relay up in the dash, so it's hidden. Have get in the dash anyway, to add two toggle switches, where the 2 square hole plugs are, lower right on this B2650 (used for re-gen on the B3620's). That means pulling the steering wheel to get the plastic hood off. My first week owning a Kubota and a used B2650HSDC, and already taking it apart.
 

Mark_BX25D

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Equipment
Bx25D
Jul 19, 2020
2,069
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Virginia
Search “add a circuit “. They make taps that plug into the fuse block

I used to make my living installing cellular phones, back in the 80s before they all became hand-helds. I have seen plenty of installations by good installers and fly-by-night clowns, and I made a lot of money cleaning up other peoples messes.

I do NOT recommend any kind of fuse tap. They spread out the fuse terminals so that they are never right again. Yes, they can work, but that's a bush league shortcut.

Do it right. Go to the battery. It's really not that difficult.

You'll be glad you did.
 
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Concept Automation LLC

Member

Equipment
B2650HSDC, BH77
Mar 12, 2026
71
20
8
New England
Agreed. This add on fuse block I would get from Blue Sea Systems, Marine Quality, stainless terminals , for the tractor or my RV. As my first Kubota (used '19 B2650HSDC), glad I downloaded the PDF Parts and service manuals. Need to pull the steering wheel and plastic dash cover, to see what room is there to mount a relay. Like to use the switched 12v. "ignition on" to enable the relays for the Aux F&R LED Bar lights, as done for the factory Work Lights.
 

McMXi

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***Current*** M6060HDC, MX6000HSTC & GL7000 ***Sold*** MX6000HST & BX25DLB
Feb 9, 2021
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Agreed. This add on fuse block I would get from Blue Sea Systems, Marine Quality, stainless terminals , for the tractor or my RV. As my first Kubota (used '19 B2650HSDC), glad I downloaded the PDF Parts and service manuals. Need to pull the steering wheel and plastic dash cover, to see what room is there to mount a relay. Like to use the switched 12v. "ignition on" to enable the relays for the Aux F&R LED Bar lights, as done for the factory Work Lights.
I'm a fan of Blue Sea Systems and have added quite a lot of their stuff to my boat. However, for automotive applications I prefer and use Painless Wiring. They have combination 12V constant and 12V ignition distribution blocks with relays and in multiple sizes. I have their kits in my F-250 and Jeep TJ to run all manner of accessories including lights, audio systems, etc. They've very well made and very durable.


70103.jpg
 
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bird dogger

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Kubota B2650 and lots of other equipment
Feb 24, 2019
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I was going to suggest adding an "ignition on" 12vdc auto relay to feed your terminal block. But the kit above from @McMXi post includes it. That's a nice kit! Might have to remove my old relay and install that kit for a much cleaner install. :unsure:
 
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Concept Automation LLC

Member

Equipment
B2650HSDC, BH77
Mar 12, 2026
71
20
8
New England
I was going to suggest adding an "ignition on" 12vdc auto relay to feed your terminal block. But the kit above from @McMXi post includes it. That's a nice kit! Might have to remove my old relay and install that kit for a much cleaner install. :unsure:
Yes, Thanks All !! Even tho a huge brite 6K LED lite bar is hard to miss leaving it on, still a good practice to have devices like that on the ign. key. That smaller 3 fuse block is nice. I bought from "Painless Wiring Products". Great supplier.
 
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McMXi

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***Current*** M6060HDC, MX6000HSTC & GL7000 ***Sold*** MX6000HST & BX25DLB
Feb 9, 2021
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Montana
I was going to suggest adding an "ignition on" 12vdc auto relay to feed your terminal block. But the kit above from @McMXi post includes it. That's a nice kit! Might have to remove my old relay and install that kit for a much cleaner install. :unsure:
Corrected to show the kit I have.

This is the kit I have in my F-250. It has three 12V constant and four 12V ignition circuits. It also comes with a rubber cap that fits over the fuses. Oh, and I don't use crimp connectors for anything. I solder and heat shrink.


70207.jpg
 

Dustball

Well-known member

Equipment
2016 B2650HSDC
Sep 15, 2023
502
373
63
Hudson, WI
I used to make my living installing cellular phones, back in the 80s before they all became hand-helds. I have seen plenty of installations by good installers and fly-by-night clowns, and I made a lot of money cleaning up other peoples messes.

I do NOT recommend any kind of fuse tap. They spread out the fuse terminals so that they are never right again. Yes, they can work, but that's a bush league shortcut.

Do it right. Go to the battery. It's really not that difficult.

You'll be glad you did.
I think there's some confusion here. You're thinking of a wrap-around tap-
1776731439723.png

Where the add-a-circuit uses the same size blades as the existing fuse so there's no spreading out of terminals that you're talking about.

1776731545272.png
 
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Mark_BX25D

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Bx25D
Jul 19, 2020
2,069
1,584
113
Virginia
I think there's some confusion here. You're thinking of a wrap-around tap-
View attachment 173201

Where the add-a-circuit uses the same size blades as the existing fuse so there's no spreading out of terminals that you're talking about.
Yes, you are correct. Those add-a-circuit gizmos don't damage anything, but they can overload the existing wiring TO the fuse block.

Better than the others, but still not great. If you are doing a permanent addition, why not do it right?