Dismiss Notice

Welcome To CK5!

Registering is free and easy! Hope to see you on the forums soon.

Score a FREE t-shirt and membership sticker when you sign up for a Premium Membership and choose the recurring plan.

EFI - Carb wiring

Discussion in 'The Garage' started by dodgedude99, Sep 30, 2005.

  1. dodgedude99

    dodgedude99 1/2 ton status

    Joined:
    Jul 12, 2003
    Posts:
    784
    Likes Received:
    0
    Location:
    burbia of illinois
    i need to clean the engine compartment of the wiring im not gonna use, and need to harness the ones i need to use.

    can all the wires going to the passenger side of the firewall (not the bunch thats for the a/c and such)be cut?
    also what color are the wires for the oil and water sending units?

    i pulled the motor almost a year ago so i dont remember, and of course why would i of marked them.
     
  2. dodgedude99

    dodgedude99 1/2 ton status

    Joined:
    Jul 12, 2003
    Posts:
    784
    Likes Received:
    0
    Location:
    burbia of illinois
  3. dave_90_blazer

    dave_90_blazer 1/2 ton status

    Joined:
    Jan 1, 2004
    Posts:
    688
    Likes Received:
    0
    Location:
    Melvindale, Michigan
    IIRC, water temp sender wire is green with a white connector, and the oil pressure has three wires with a oval shjaped gray connector, but the wire for the gauge is the grey one i think, i'll look when i get a chance

    i think you can cut them, but if you have a VSS, you will loose your speedo, it cable, feel free, just trace the gauge wires and make sure you don't cut those

    edit, the oil sender wire is tan, not grey
     
    Last edited: Oct 1, 2005
  4. randy88k5

    randy88k5 1/2 ton status

    Joined:
    Nov 8, 2004
    Posts:
    1,248
    Likes Received:
    0
    Location:
    Lynchburg, VA, USA
    Coolant temp sensor is 2 wire connector - yellow and black
    Oil pressure switch is brown wire w/spade connector

    -88 TBI
     
  5. dave_90_blazer

    dave_90_blazer 1/2 ton status

    Joined:
    Jan 1, 2004
    Posts:
    688
    Likes Received:
    0
    Location:
    Melvindale, Michigan
    nope, he asked about the temp gauge wire, not the coolant temp sensor, the gauge sender is in the head, 1 wire, green, the cts is in the intake
     
  6. randy88k5

    randy88k5 1/2 ton status

    Joined:
    Nov 8, 2004
    Posts:
    1,248
    Likes Received:
    0
    Location:
    Lynchburg, VA, USA
    thanks for the correction, ran out to look before I double checked the thread
     
  7. dave_90_blazer

    dave_90_blazer 1/2 ton status

    Joined:
    Jan 1, 2004
    Posts:
    688
    Likes Received:
    0
    Location:
    Melvindale, Michigan
    yeah, me too, I forgot the earlier TBIs had 2 oil pressure switch/senders, one was the the sender for the gauge, 1 wire, and one was the fuel pump switch, 2 wire, the later TBI trucks(89+?)had it all as 1 unit, 3 wire
     
  8. dodgedude99

    dodgedude99 1/2 ton status

    Joined:
    Jul 12, 2003
    Posts:
    784
    Likes Received:
    0
    Location:
    burbia of illinois
    ok you got me all confusid :p:

    since i dont need anything electronic anymore and it already has a mechanical speedo (which works out good for the NP205), that means i can cut the passenger side group of wires and not worry about it, right?

    now for the oil pressure sending unit and the temperature sending unit (to operate the gauges) what color are those wires now?

    also on the bottom of the firewall on the drivers side (directly below the wiper motor) there is a wide flat connector that is wrapped up with some sort of hose, what is that for?
     
  9. randy88k5

    randy88k5 1/2 ton status

    Joined:
    Nov 8, 2004
    Posts:
    1,248
    Likes Received:
    0
    Location:
    Lynchburg, VA, USA
    Ok, the temp sending unit is the single green wire with a white connector

    I cant see the oil pressure sending unit wires too well (note to self, get rid of cruise control unit) but it looks to be a pink wire possibly with a black tracer, and another dark wire, probably black.

    The thing with the hose around it is most likely the lead for the cruise control actuator. If not, that is where the comp harness and the headlight/ts harnass is located.
     
  10. dodgedude99

    dodgedude99 1/2 ton status

    Joined:
    Jul 12, 2003
    Posts:
    784
    Likes Received:
    0
    Location:
    burbia of illinois
    so the oil pressure sending unit should have 2 wires for it, is that what your saying, a pink and a black??

    also what does the part actually look like....
    a bolt with a connector on top
    or
    a small can with male threads.

    im looking thru partsamerica.com and not quite sure which is it that i need.
     
  11. randy88k5

    randy88k5 1/2 ton status

    Joined:
    Nov 8, 2004
    Posts:
    1,248
    Likes Received:
    0
    Location:
    Lynchburg, VA, USA
    Ill snap a picture in a lil bit
     
  12. dodgedude99

    dodgedude99 1/2 ton status

    Joined:
    Jul 12, 2003
    Posts:
    784
    Likes Received:
    0
    Location:
    burbia of illinois
    cool, i can do mechanical stuff with my eyes closed, but wiring i cant stand.
     
  13. randy88k5

    randy88k5 1/2 ton status

    Joined:
    Nov 8, 2004
    Posts:
    1,248
    Likes Received:
    0
    Location:
    Lynchburg, VA, USA
    OK here are the pictures in order, as I dont know how to caption them yet...

    #1 - Coolant Temp sending unit for gauge (next to spark plugs for #1 & 3 cyl)

    #2 - Connector for temp gauge sender

    #3 - Picture of oil pressure sending unit for gauge (behind distributor)

    #4 - Oil pressure switch (next to oxygen sensor & oil filter)

    #5 - Coolant temperature sensor (in manifold near water outlet)

    IMG_0706 (450 x 600).jpg

    IMG_0707 (600 x 450).jpg

    IMG_0713 (600 x 450).jpg

    IMG_0715 (450 x 600).jpg

    IMG_0714 (600 x 450).jpg
     
  14. dodgedude99

    dodgedude99 1/2 ton status

    Joined:
    Jul 12, 2003
    Posts:
    784
    Likes Received:
    0
    Location:
    burbia of illinois
    Randy your awesome, thanks alot for your time and help.
    Shawn

    now i just have to get the damn motor in!
     
  15. dyeager535

    dyeager535 1 ton status Premium Member

    Joined:
    Dec 13, 2000
    Posts:
    26,980
    Likes Received:
    189
    Location:
    Roy WA
    How about just unplugging all you don't need and just selling the wiring harness?

    Not a thing in there you need to cut that I can think of except a couple of the feed wires from the fuse panel. Unless of course you like a bunch of useless wiring hanging out under your dash, along with the ECM.
     
  16. dodgedude99

    dodgedude99 1/2 ton status

    Joined:
    Jul 12, 2003
    Posts:
    784
    Likes Received:
    0
    Location:
    burbia of illinois
    someone on here needed they TBI connectors for under the hood, so i snipped those off and gave them to him.

    i probaly will pull the ECM eventially, but my main goal now is to clean up the engine bay and get the 454 dropped in.

    think the bellhousing could handle the weight of the 465 AND the 205?
    after heaving the tcase on the work stand to clean and paint it, im not looking forward to trying to do that under the truck.
     

Share This Page