Smitty454

Hey guys, I need some help IDing some connectors and wires. I have a couple wires labeled CEL and VSS. I already have a VSS wire going to the transmission I believe and Im not too sure about where this other VSS goes. I have no idea where the CEL goes to or what it stands for.

I also have these two in the pics below. They are both on the passenger side of the engine.

ls1nova71

iTrader: (4)

VSS is Vehicle Speed Sensor, if you have it labled, then it most likely is coming from the PCM and is the wire for your speedometer. CEL is the Check Engine Light, it sends a ground to turn it on if theres a problem.

In your pics, the white one looks like the crank sensor, and plugs in behind the starter, its easy to miss. The purple one is the MAF sensor plug

350SS

iTrader: (38)

I think the first pic might be the alternator since it is a 4 pin connector with two pins used?

ls1nova71

iTrader: (4)

Good catch! Guess I should have made the picture bigger to get a better look at it....

EFIHARNESS

The first connector is 3 pin not 4 metric pack. so ckp or cam ?. what are the wire colors ? Second pict looks like maf.

ls1nova71

iTrader: (4)

No, he's right, it's a 4 pin connector. You have to make it bigger to see it. It has 2 pins in the middle, my guess it they're going to be brown and gray.

EFIHARNESS

looking closer you are correct, 4 pin. the keying looks to be alt.

Boy Scout

Don't mean to hi-jack the thread, but just getting ready to start plugging in a harness on a 5.3. Any suggestions on a Youtube Video, or web link that can walk through the process ? (at least I will get the white alternator and MAF plug right !!)

truckdoug

iTrader: (25)

well aside from the coils and injectors they really only plug into one thing