91 Nissan truck wont turn over... Please help

[stevetodd]

Ok here it is. I have a 91 nissan h/b truck. its got the 4cyl ka motor, 5speed transmission. so the other day i went to the car wash to vacum it out and when i went to leave the truck acted like the battery was dead. i had a friend come give me a jump and when i tried to start it we noticed that it was smoking from under the hood. the battery has been relocated to the bed but where it used to be there were some wires that got cut and arced. it was the 4ga wire that goes to the starter and two smaller say 6 gauge white wires. i have fixed the wires but now when i turn the key i get nothing. the headlights work along with the dashlights, clock and hazards. it basically acts like you dont have the key in the ignition, u get no radio no blinkers nothing. i took the steering collum apart and im getting no juice to the switch. ive checked all the fuses and they are all good. we did find a relay that was fried so i replaced it and nothing. i took the seats out and tried to put the ecu in diagnostic mode but i dont think its getting power either. i see two leds but neither one does anything. Can anyone please help. im usualy very good at fixing problems but im at a loss. please please help

[carmo]

Check those fusible links. I think you have the wire style ones. Sometimes they will burn up inside and you can't tell it broke connection. Tug on the wire and see if the sheath just breaks. You can buy spools of fusible link and just rebuild the thing. Goodluck

[stevetodd]

by any chance do you know where they are. i traced down two 10ga white wires and found where they had been split into two wires each. that could have been where they were. that being the case is there somewhere else i should be looking or could it be somewhere else. im also considering trying to hot wire the truck but i cant find a wiring diagram for the truck so im not sure which wire is the hot one

[carmo]

Lemme do some research and I'll get back to ya. We have the factory service manual at work...... I'll try to post answers tomorrow....