Cucv 12v bus normal amp draw

[dconn22]

I was wondering if anybody knew what kind of amp draw the 12v buss would have keyon running with no lights, fan or wipers on (only always on essentials)? Does 9-10 amps sound too much? Sorry, it's a M1008 (no radios).

 

[Skinny]

I was wondering if anybody knew what kind of amp draw the 12v buss would have keyon running with no lights, fan or wipers on (only always on essentials)? Does 9-10 amps sound too much? Sorry, it's a M1008 (no radios).

Probably less then an amp. It only needs the current for the fuel solenoid to stay on once running.

 

[Curtisje]

My truck pulls 5 amps of 12v while running.

24 volt conversion... sort of

I bypassed the glowplug resistors a while back because others had done it. I also have a volt meter on each battery so I can see how each is doing. I didn't like watching the front battery drop to 10V or lower during startup nor am I a fan of swapping the battery positions every few months. I...

steelsoldiers.com

 

[MarcusOReallyus]

Whatcha askin' fer, Dconn?

 

[dconn22]

Whatcha askin' fer, Dconn?

I am sorting through many electrical issues and am just looking for what "normal" conditions are. If 9'ish amps is too high when running then I got some searching/troubleshooting to do. It is zero with ignition off.

 

[dconn22]

Probably less then an amp. It only needs the current for the fuel solenoid to stay on once running.

Is that the pink wire?

 

[Skinny]

Yes

Are you wearing without the alternator charging? Because you may be reading the current going into the battery.

 

[dconn22]

Yes

Are you wearing without the alternator charging? Because you may be reading the current going into the battery.

I don't think it is the battery, I waited till the batt was down to pulling only about 2amps. Had 2 at batt, 9.5 at the 12v buss feed and 11.5 out of the alt. Seems everything is working/adding up right just wondering what's pulling amps inthe cab. Maybe it will be warm enough tomorrow to start checking some wires.

 

[dconn22]

Ok, I have traced my 12v draw is on the 10ga red wire feeding the ignition switch. I disassembled the horn contact (button) and the draw dropped from 9.5 amps to 2 5. I have replaced the ign. switch and the switch on the left side of the column. I have not replaced the wiper switch or horn/blinker contact. Guess the column is coming apart.