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connor75, ASE Certified Technician
Category: Ford
Satisfied Customers: 360
Experience:  Senior master technician, Ase master L1
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I have a 1998 f800 ford and i need a complete cab wiring diagram.

This answer was rated:

I have a 1998 f800 ford and i need a complete cab wiring diagram.

What are you trying to fix so i can send specific diagrams?


Customer: replied 7 years ago.
we have a 3.9 amp draw on battreies stemming from alrarm module.does it have a time out mode? we need a systems operation on the alarm module.

What alarm, and which cummins engine 5.9, or 8.1

Customer: replied 7 years ago.

buzzer module part# XXXXX


a/c compressor overtemp input

crank input

power feed (hot at all times)


a/c compressor over temp indicator control

courtesy lamps on input

park brake on input

low air tone input

abs fault indicator control

power feed (hot in start or run)

ignition input

park lamps on input

park brake warning switch input


We have every thing isolated exept for power feed and ground.

Still have 3.9 amp draw

Also tried a new power feed

Shows a perfect ground

I am going to research this, but will not respond until later tonight, I opted out so if anyone else can answer quicker they will, if not I will send you pictures tonight.

Customer: replied 7 years ago.
connor 75 did you come up with anything
Not yet give me an hour if I can't get them I'll send you a response, which cummins engine is in the truck?
Customer: replied 7 years ago.
8.1 liter
Okay, I have 8 pictures, let say you write out you email address, but don't just spell it out, such as pps and thats at aol, or yahoo, so that I can send you all 8 much easier, sound good?
You there?
Customer: replied 7 years ago.
you can't just write it, the site blocks it you have to say it with sentences such as pconn34 and thats at.........
Did you understand that at all?
Customer: replied 7 years ago.
jduke at Let me know if this does not work
coming right up!
Did you get and can you use what I sent you?
Customer: replied 7 years ago.

We got it just now got it going . Thanks

You're quite welcome, don't forget to press the accept button. What was the cause of the draw?
connor75 and 4 other Ford Specialists are ready to help you
Customer: replied 7 years ago.


Multiple problems key switch,light switch,&a company radio.