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Lets play, name that wire

Discussion in 'The Garage' started by sled_dog, Apr 8, 2005.

  1. sled_dog

    sled_dog 1 ton status

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    [​IMG]

    As you can see its near my collector. The one with the blue wire is my O2 plug, the other one... I have no clue. I never noticed it till after the motor swap now I have no clue where it goes. I kept forgetting to take a picture of it. The plug on my trans is hooked up, same for trasnfer case, its barely long enough to even touch the trans.
     
  2. yunit

    yunit 1/2 ton status

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    Did you follow up in to the engine compartment?
     
  3. k20

    k20 3/4 ton status

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    the one w/ the red arrow is the one for a th400 kickdown switch.
     
  4. sled_dog

    sled_dog 1 ton status

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    ..... my rig doesn't have a TH400, never has, never will. It rolled out of the factory with an SM465. Think it just came with the wiring to be a universal setup?
     
  5. k20

    k20 3/4 ton status

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    well the shape of it looks like a th400 connector, look in the end of it, if it has 2 spade recepticles in it, in the vague shape of a T, that is a th400 connector. It is possible I guess, perhaps the wiring harness was changed somewhere in the past for burnt wires or something?
     
  6. sled_dog

    sled_dog 1 ton status

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    Nope, it was a one owner vehicle, no engine fires or anything. I'll go look but I think the plug is just a single round hole in the center.
     
  7. k20

    k20 3/4 ton status

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    if its just a single round hole in the middle then I dont know, if its almost a T (the 2 not intersecting) its a th400. The wire through the grunge looks orange which is the color my th400 wire is
     
  8. sled_dog

    sled_dog 1 ton status

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    well its neither one. It has a single slot connection. It travels down the firewall in the same split loom as the O2 sensor. Best guess I have is the grounding switch for the Clutch pedal(so it knows the clutch is down). I have no idea where that is but I know it works(can't start without the clutch down).
     
  9. dirtwarrior17

    dirtwarrior17 Banned

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    I'm not sure which one your talking about the blue arrow or red arrow?

    the blue one looks a lot like my cts plug or distributor plug. the red arrow if i had to guess maybe a second knock sensor. :confused:
     
  10. sled_dog

    sled_dog 1 ton status

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    I'm certain you are wrong on both counts. Read the post, I said the blue one is the O2 sensor. The other is a mystery but there aren't 2 knock sensors and they use a different connector style. Thanks for trying, step back and try your luck again :D
     
  11. dirtwarrior17

    dirtwarrior17 Banned

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    ah... it was the wire part that got me hung up..,


    What motor is this for?



    Hmmmmmmmmm... oops i ment to say cps instead of cts. but where does the thick red wire go to? If you trace that all the way back you might get a better idea. maybe even follow it back to the fuse box.
     
  12. K5MONSTERCHEV

    K5MONSTERCHEV 1/2 ton status

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    Since you have a 465, theres a switch for the back up lights, then another wire goes to somehting else but im not sure what it does, that what it looks liek to me. Look for another terminal on the top of yoru 465.
     
  13. big83chevy4x4

    big83chevy4x4 3/4 ton status

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    the wire for the reverse lights is a 2 wire plug, the same exact plug for the tcase light.

    the clutch pedal switch is on the pedal assembly so it can't be that.

    it kinda looks like the plug for the electric oil pressure sender.
     
  14. dirtwarrior17

    dirtwarrior17 Banned

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    that what i thought but i doubt he missed that.
     
  15. sled_dog

    sled_dog 1 ton status

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    nope that is hooked up. So are both temp sensors, knock sensor, map sensor stuff, everything that I can hook up is.... but not this one. It is a very similar connector to the oil pressure sender one though.
     
  16. R72K5

    R72K5 Banned

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    it might be the TCS plug for on top of the 465, forward and reverse range would retard spark timing

    or it is for the oil pressure sender


    one or the other im sure, both would be single spade slot like that
     
  17. BIG STEVE

    BIG STEVE Registered Member

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    The clutch switch is inside on the linkage not that had the sm465 out
    of my 90 last summer almost seems like there were 2 wires on tran top
    back up and? soon as it warms up ill go look if have not found out by then.
     
  18. sled_dog

    sled_dog 1 ton status

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    2 connections on your tranny or 2 wires? There is presently one connector plugged in up there with 2 wires. Maybe I missed a connection up there.
     
  19. dyeager535

    dyeager535 1 ton status Premium Member

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    Originally carbed?

    Whether TBI or carbed with electric choke, the early ones will have two oil presure connectors. One for pressure gauge and one for oil pressure for either the fuel pump in TBI, or to kill power to electric choke if carbed.
     
  20. sled_dog

    sled_dog 1 ton status

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    TBI motor. 89, original TBI originally 4 speed too.
     

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