fuse for code reader???

[99stepside]

Does anyone know where the fuse for the code reader is? i have a 99 3.0 4x4. i tried to run some codes but it doesnt work at all.wont even turn on. ive tried 5 different readers. all the readers worked on my 01 so i know they work. thanks

Bryan

[Southern3.0]

The diagnostic port runs off the cigarette lighter fuse

[99stepside]

thanks man that would definetely explain it. my cig lighter doesnt work. thanks much...