I need the diagram for under the hood fuse box for 2004 nissan titan, i dont have my cover that shows the diagram

Same as the Nissan Frontier? Does it look like this?

https://knigaproavto.ru/shemy/en/nissan/frontier/655-2004-2014-nissan-frontier-fuse-box-diagram.html

There is a video here that it has 'Hidden and undocumented fuses'. I have never seen that before.

https://www.google.com/search?q=2004+nissan+titan+fuse+box+diagram

..

They are all here, but you need a good auto-electrician

Fuse box diagram Nissan Maxima a32 a33 a34 and relay with ...

https://fuseandrelay.com > nissan > maxima
Fuse boxes and relays nissan maxima a32, a33 and a34: photos, box diagrams, element assignment. Video example of their location. The fuse responsible for ...
‎a32 · ‎a33 · ‎a34

Fuse Box Diagram Nissan

https://fuse-box.info > Home > Nissan
Fuse box diagrams (location and assignment of the electrical fuses and relays) ... fuses and relays) for Nissan 350Z (2003, 2004, 2005, 2006, 2007, 2008).

OP Text edited for clarity and spelling

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2004 Nissan Titan Car Radio Wiring Chart - MODIFIEDLIFE

https://www.modifiedlife.com > 2004-nissan-titan-car-r...

Feel free to use any Nissan Titan car stereo wiring diagram that is listed on Modified Life but keep in mind that all information here is provided "as is" without any ...

hope this is a help

https://www.google.co.uk/search?q=nissan+titan+5.6+fusebox&biw=1920&bih=993&tbm=isch&imgil=2QU9hbz9I6N63M%253A%253B6ZkENIvOrv_JnM%253Bhttp%25253A%25252F%25252Fwww.titantalk.com%25252Fforums%25252Ftitan-general-discussion%25252F154949-fuse-box-diagram-2008-titan.html&source=iu&pf=m&fir=2QU9hbz9I6N63M%253A%252C6ZkENIvOrv_JnM%252C_&usg=__iT9dS-5cdDgorXmclO27Ig_SgYw%3D&ved=0ahUKEwip87fpguzNAhXCtBQKHeh7BR4QyjcIJw&ei=6eKDV-naOMLpUuj3lfAB#imgrc=2QU9hbz9I6N63M%3A

Eric,
Does the break light on the top of the cab work? If so the fuse and stop lamp relay are ok.
If not the 10 amp fuse in fuse box (JB) maybe open # 20 Stop Lamp passenger side panel . If it is good there is a stop lamp relay (E12) in fuse box under hood from the manual it is the second one in from the left by the battery. Also there is a(VDC) Control Unit (E125) can't find where in the manual it is located.
You would think that the power from the battery , fuse switch to lights not, that is why I got the complete manual for the truck. hard to under stand at times.

Check for the tow relays in the under hood fuse box. Black box behind the battery on the passenger side. Do a web search for 'titan tow relay' for more info.

check all fuses in dash and under the hood

chances are that the cable broke, youll have to open the hood from under the car, and then replace the hood release cable.

You need to install the tow relays, one blue and one brown. Buy them at U-Haul, $25 for a set of three. They go in the black fuse box, under the hood, behind the battery.

Check under the hood on the driver side or passenger side. There should be a fuse box that should show you where the fuse for the windshield washer is but my guess is the driver side. Good luck!!!