what is this and where does it plug into?

it plugs in the back of the alternator its the choke activation switch

it might b a split wire meaning some one had connection junction in the middle of the 2 wires soo find the wire from the altenator and connect them b.c thats soposed to be in the back of the alternator

here is what is plugged into the back of my alternator.

no, there is a male spade there that takes that plug. I've never seen one pulled up by the carb before but that is indeed the choke wire.

You're truck is about to run a whole lot better.

what does the choke do?

Ok I finally found it thanks for all the help.

what was it to? the intake?

it was the choke and plugged into the back of the alternator.

its the temp sending wire...on the block under the thermostat housing is where it plugs onto....a male spade on a stop sign shaped sensor under the radistor hose.

nope it was the choke plugged into the back of the alternator.