mystery wire

[ericg75]

The good news is after about 12 years I have an engine back in my truck. The not so good news is I have a few connections that I don't know where they go. The first is a purple wire that's in the same loom as the knock sensor. Any ideas where this connects?

You must be registered for see images attach

 

[evilunclegrimace]

starter solenoid.

 

[HotWheelsBurban]

starter solenoid.

Yup that's the wire from the ignition, that activates the solenoid when the key is in Start. That circuit is purple on Chevys going back into the 1950s.

 

[ericg75]

Thanks! I have to get pictures of the rest but that's at least one down.

 

[ericg75]

Next one seen resting on the coolant line. I think I got the the 2 ground wires in the second photo in the correct places by the thermostat housing.

You must be registered for see images attach

You must be registered for see images attach

 

[ericg75]

In that first picture I'm guessing that's a connector for an O2 sensor. As the old exhaust is long gone I'm trying to figure out if that sensor will go in the y pipe or after the y pipe? I'm also guessing wherever that sensor goes it will have a long wire as that connector in the picture is extremely short.