New truck...Hacked wires...Help ID?

[rball716]

Upper cowl behind air filter



2 spots coming out of the firewall below brake booster. The lower is 2 wires, green and blue. The upper is a big bundle that is cut off farther down.



Here's the end of the bundle that's cut.

Anyone help me ID these wires so I can get started.

The PO installed new gauges. The temp gauge isn't "hooked up" I think that may be the green wire? The oil pressure gauge seems low/off.

Also the speedo is about 5mph high and bounces, I know it varies with speed being off. Smaller tires may be the issue with it being off.

Another Non electrical issue



Anyone know what this is? Its on the frame below the radiator.

Thanks in advance

[dsgb610]

The last pic goes to your charcoal canister. I think it comes from the fuel tank.

I think that green plug in the first pic is for your A/C i think.

That cut bundle is maybve for cruise control? the one with the big hose.

[timthescarrd]

The cut/taped bundle with the hose is Cruise Control.  Coolant Temp sensor is a dark green wire that comes out of the main connector and goes to the sensor on the drivers side head, look between the #1 and #3 spark plug.  I believe that the plug in the first pic is AC

Here's the wiring diagrams

http://forum.73-87chevytrucks.com/smforum/index.php?topic=11766.0