wiring help

[nikesb1111]

so im finishing up the wiring on my k10 and i just have a few questions about what these are and where they belong. Any help would be great, thanks.

#1


#2


#3


#4

[HAULIN IT]

#1) Is the electric oil sending unit plug....it goes behind the distributor. Has someone added a mechanical oil gauge, the electric sending unit may have been removed?
#2) Looks like part of the ESC system from the area it's in, if your distributor has been changed to a regular HEI, you won't have any place for it
#3) I can't help you....That's the same one wire end used in various places (HEI 12v, elec.water temp) however, where your holding it, it isn't either of those. 
#4) Is a horn wire
 Vile & others will get you sorted out I'm sure. Good Luck with your project!  Lorne

[Blazin]

What he said. I am not sure on the third one either. The end closest to your thumb looks like the temp sending wire, but if it is it shouldn't be plugged into another wire?

[VileZambonie]

Yes #1 is oil pressure sender, #2 looks like the EGR solenoid connector, #3 Does the end of it go to your AC compressor?, #4 should go to the F note horn. They came with an A and F on both sides of the radiator support.

[nikesb1111]

ok thanks guys i was looking for the horn wire, i no longer have egr and i dont have ac. I have one more thing i have a question about ill post it up in a minute.

[nikesb1111]

this was on the drivers side frame rail behind the headlights, there was a wire going to it from the headlight harness and there was never a wire on the other side.

[Blazin]

I believe that is the low brake fluid light sender?

[HAULIN IT]

Are you saying your truck is not an A/C truck or has it been removed by someone at some point? Firewall looks like a non A/C in the one pic. The wiring may have been changed though.
Blazin' is correct about the brake warning lamp & it sounds like you know where the wire that plugs into it is...the other end plugs on the brake line distribution block on the crossmember.
 Can you turn #3 over & take a picture? Where are each of the wires going to? Maybe unplug those & take a picture of each end. Lorne

[nikesb1111]

the truck never had ac. ill get some more pics of #3. #4 has two wires that go to it and i found both of them, none of them go to the block on the crossmember, they both come out of the headlight harness. any ideas?

[Jiggy]

Definately on the low brake fluid sensor.  That number three....is it possibly the knock sensor?  It would be located down on the block, right around the passenger side engine mount.  I have two trucks with the knock sensor, one has the plug in line and the other does not (it uses a single wire all the way up to the firewall).

[HAULIN IT]

#4) Is definitely the horn wire (Green in color) & yes, it is in the headlamp harness, should run from one horn to the other. The last one you posted (with the little bracket) is definitely the brake warning lamp. On the brake distribution block you should see a little round sender, the other end of the wire shown, plugs in there (kinda Whitish, round 90* rubber), an end similar to your #1, plugs into the end near the bracket.  Lorne

[nikesb1111]

well i hooked up that one horn but i dont have any wiring for the other one, where should it be?

[VileZambonie]

the brake pressure differential switch is in the combination valve. That bracket bolts to the top of the frame next to the steering box. The wire that connects to it is in your harness.

[DnStClr]

The light green horn wire that hooks both horns together needs to hook up with a green wire that goes to a horn relay located behind your dash convenience center (heater,a/c controls). So you should be lookng for a green wire.

[VileZambonie]

Don'tcha mean inconvenience center?