I was installing a new cd-deck in my truck and I cut two wires from the factory wiring harness(yea I know I'm a dumbass) thinking I needed them. They were the 12v constant and the 12v ignition wires. When I cut them I got a spark from I think was the constant. Now my truck won't start. It turns over and then fires, but then goes back to turning over and then weakly tries to fire again. I'm thinking it's a fuse, but I was wondering if it could be anything else. Also I'm having a hard time removing the ignition fuse that's in the cab. The angle it's in makes it so the fuse grabber won't grab it. If someone could please help it would be much appreciated.

 

I hate electrical problems, I got some small needle nose to get those fuses out in the cab, larger ones for the fuse box under the hood as well.

 

should just be a fuse. there's a special one in there somewhere, might be called IOD or something like that. check the one's in the end of dash, also under hood beside battery in the power box. +1 on tiny needle nose.

for future reference... step 1 - disconnect battery...

 

I also agree that it SHOULD just be a fuse problem. After all, that is pretty much why they are in there, to make sure they don't ruin other stuff. I would just get a multimeter or a light bulb circuit tester and start checking fuses. One tip though, make sure you are checking the proper side of the fuses. One side should show constant hot if using a light tester and the other side will only show hot if the fuse is ok. I have tried diagnosing problems when I first got into vehicles and didn't realize this until halfway through the fusebox.

 

Bet ya won't do that again!! I ruined a pair of pliers doing that once, forgot to disconnect the battery had to change the whole harness too. Thank God it's only a fuse...that's all it should be.

 

for quickly testing fuses, you can disconnect battery (no $hit, disconnect battery) and then use multimeter on ohms/beep setting and touch each side of the fuse while its still in the socket.