Loose wire identification

[johnny reb]

Please help me identify these wires. These wires have been just hanging around unconnected since I bought the truck 7 years ago.

Picture 1 - This 2-prong connector comes from behind the distributor near the oil sending unit.
Picture 2 - This wire comes down along the valve cover on the drivers side.
Picture 3 - This wire comes down along the valve cover on the passenger side.
Picture 4 - These 3 wires come from a grommet on the passenger side firewall.

 

[ColAdo82K5]

Number3 is for your electric choke on the carb.
Blake

 

[dyeager535]

#4 looks like a knock sensor connector, and then there is a ground and fusible link.

Truck probably had ESC, thus the knock sensor. (or it was a CA truck with CCC) Ground wire might be part of that system, but that fusible link wiring, I don't think those were used on anything other than the ignition, and should be between the starter and firewall, should be two of those wires.

 

[johnny reb]

Number3 is for your electric choke on the carb.
Blake

If you look closely at picture 3 you'll see another wire laying across the valve cover. That was the wire that was on the electric choke on my rochester q-jet. My q-jet only had one wire connected to the electric choke. I don't think the wire I'm trying to identify is for the electric choke. It's not quite long enough to reach the electric choke.

 

[sweetk30]

if your profile stuff is correct 86 k5 blazer. this will be emisions stuff or tbi stuff possible.

 

[R72K5]

well 86 weren TBI, so its gonna be ESC/EST stuff(48 state federal) or CCC stuff(cali and the 50th state) ?

i cant see your pics worth a damn they are too dark


good luck