CUCV Fuse Box Layout

[Warthog]

There are some errors in the TM diagram for the CUCV fusebox.

I will attempt to point them out as I find them


Here is a "clean" fuse box with all the proper fuses and labels


ITEM


2 - Hazard Flasher


3 - not used except for the M1010. The M1010 uses it for Ambulance Accessories


4 - no such fuse the diagram is wrong


5 - 20amp Heater Fuse - Controls the heater. Also controls the GEN1 idiot light, 4x4 light and the Oil Pressure light


6 - 10amp Stop - Controls the regular stop lights and the Blackout stoplights


7 - 30amp Headlight - Controls the headlights and also feeds the stoplight, xxxx lights


8 - 25amp Wipers - Controls the wipers and washer pump - Only fuse that is hot with the key in the ACC position


9 - Flasher - turn signal flashers


10 - not used except for the M1010. The M1010 uses it for the Gas Particulate system.


11 - 15amp Horn


12 - 10amp 24v - Controls the GEN2 light, 24v sides of the GEN2 relay and the voltmeter


13 - 5amp Instrument Lights - Controls the lights for the instrument cluster, heater switch and voltmeter


14 - 30amp Flasher - Controls the hazard and turn signal flashers and the backup lights


15 - 20amp Ignition - Controls 12v side of the Voltmeter and GEN2 relay, transmission kickdown, low coolant and water in fuel light


16 - 20amp Tail Light/Courtesy Lamp - Controls the park lights and the underdash courtesy lamps


17 - 20amp Engine Control - Controls the sealtbelt buzzer, dash lights for the tempeture, low coolant, brake and water-in-fuel. This fuse also supply's power to the GP controller via circuit 39G (diagram E-7)


18 - 5amp Blackout - Controls the B/O markers and B/O headlight

 

[Warthog]

Now to the extra terminals on the box and the fuses that control them and other oddities:

Fuse #12 - Voltmeter

The V/M terminal is hot at all times with 24v. Controlled by fuse #12



Fuse #15 - Ignition Control

With the Key in the RUN position you will have 12v at the three terminals on the left hand side. Controlled by fuse #15



Fuse #16 - Marker Lights

With the Service Light switch on you will have 12v. Controlled by fuse #16



Fuse #18 - B/O Lights

With the B/O Switch ON you will have 12v. Controlled by fuse #18




Oddities


Fuse #5 - Heater

Fuse #5 is a trouble spot. If it goes bad your 4x4 light and the Oil Pressure lights will not work.

Also the GEN1 will no longer work. This is not shown on any diagram in the manual.



Fuse #8 - Wiper

If you want to use the ACC position of the ignition switch, this fuse is the only one that works in the ACC position. Many members have installed a piggyback fuse and use it to control a relay that powers a new fusebox.

 

[Warthog]

Fellow member Al Harvey created this PDF file of the fusebox. Print it off and keep it in your glovebox.

Thanks Al

View attachment CUCV Fuse Panel.pdf

 

[jpg]

Should M1010 fuse #17 be 20 or 30 amps?

My M1010 came with a 30-amp fuse in #17, Engine Control. The TM and the SS thread below both say that should be a 20-amp fuse for non-M1010 CUCVs. They don't say what the M1010 should have. Is 30 amps correct for this fuse in an M1010, or do I have the wrong fuse installed?

This thread lays out the non-M1010 fuse box.
http://www.steelsoldiers.com/showthread.php?132309-CUCV-Fuse-Box-Layout

Page 4-31 of TM9-2320-289-20 also lays out the non-M1010 fuse box, with errors corrected in the SS thread referenced above.

I find several items in my M1010 that I don't find in the TMs or elsewhere on SS:

• My M1010 has a 25-amp fuse in #3, which I'm told is for Ambulance Accessories,
• and a 30-amp fuse in #10, for GPFU and A/C.
• In the TM, #16 is a 5-amp fuse labeled "Courtesy Light". In the SS thread above, it's a 20-amp fuse. In my M1010, it's a 20-amp fuse that also powers the cigarette lighter. As far as I can tell, my M1010 has no courtesy lights, and the TMs don't document the cigarette lighter.

My M1010 came with the following fuses installed:
View attachment 583009

 

[Warthog]

Member 48cj2a took fuse box list and pictures and created a printable PDF. Another good item to print and keep in your glove box or a 3-ring binder

Thanks 48cj2a.

View attachment CUCV Fuse Box Aid (2).pdf

*** Updated PDF file ***