Electrical diagrams for Inside truck

[94Truck]

I have a 94 c1500, and am looking for any sites where I can find electrical diagrams for inside the truck, such as fuse box connections, convenience center, wires running through the firewall, and steering column connections. The previous owner made a mess with connections causing shorts everywhere and I am hoping to return them back to what they were. I  have a couple of diagrams that I bought at the auto parts store but I am looking for something a bit more specific.

[thx1138v2]

The AutoZone web site has pretty good electrical diagrams. You do, however, have to sign up to access them but it's free. You will need to enter some login credentials and your truck info. Once you log in, go to the bottom of the page and click on "Repair Help" under "Services". That will bring up a menu and you click on "Access My Vehicles & Repair Guides". You'll see you truck info but don't click on that. Click on the "Vehicle Repair Guides" below it. That brings up another menu and among the options you'll see two options for  electrical issues. Click on the "Chassis Electrical" option. That will bring up yet another menu. At the bottom of that menu you will see "Wiring Diagrams" - click on it. That will bring up an "Index of Wiring Diagrams" With a "Click to Enlarge" message below it and also the wiring diagrams below that. Use the index or just scroll down through the images and click on whichever looks like it might cover your needs.

 

I own a 94 Sierra C1500 also and I've found it quite useful in the past.

[Brian Lindsey]

i have an account with alldata diy and mitchell diy both have electrical diagrams , cost was 50.00 for 5 yrs each, so far well worth the money, especially when my passlock control module went bad.