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  1. Jgonick

    Have you checked your ground?

    Positive to neg or Neg to pos?-:pp: I probably should not of stirred the pot- for the vast majority of people, it doesn't matter. When I was in college, I actually had professors get extremely mad with each other arguing over this topic.
  2. Jgonick

    Have you checked your ground?

    But which way does electricity really flow? Positive to neg or Neg to pos?-:pp:- I know :roflbow:"conventional current".(even though it's wrong) :p If you are curious-LINK
  3. Jgonick

    washer pump not working

    If you have power on white wire at washer and the pink wire appears good to the bulkhead- you could use a piece of wire to jump the pink connector to the black connector at the module to see if the washer works. If it doesn’t -next- remove the module and use the wire to jump the pink and black...
  4. Jgonick

    washer pump not working

    Does the white wire at the washer have ~12 volts? If it does, the pink wire is probably not getting to ground (broken or loose connection etc..) In an 87 v10 your bulkhead (going through firewall) should be similar to the two attachment. I am unable to see the portion that the washer pnk &...
  5. Jgonick

    Windshield washer motor questions

    See your other post about this problem. Washer- White wire brings volts from fuse block. Pink wire goes back to switch to ground circuit when selected. Black wire at switch grounds. If your wipers work, the switch is grounded properly. Wipers- White wire also brings volts to wipers. The...
  6. Jgonick

    washer pump not working

    If I’m remembering correctly (not home currently to check diagram) the pnk wire goes back to wiper switch to ground wash pump when selected. The white wire brings power from fuse block to washer pump. Wipers work the same way- white brings current & the other color wires take it to ground...
  7. Jgonick

    Blower motor

    Another- Maybe took a quick look at the wiring diagrams this morning- Possibly the A/C setup had too much of a voltage drop on the circuit to use high setting. With A/C the circuit also powers pressure control switch/compressor and the fast idle solenoid. Low, Med1, & Med2 all go through...
  8. Jgonick

    Blower motor

    Also it could need more air flow dealing with heat transfer aspect of the evaporator. More air flow increases heat transfer & cooling.- -don’t know- just another guess.
  9. Jgonick

    Blower motor

    My guess why- It is generally harder to blow cold air than hot air because cold air is denser, meaning it exerts more pressure and is therefore more resistant to being moved compared to less dense hot air; essentially, it takes more effort to push a mass of cold air than a mass of hot air.
  10. Jgonick

    fuel gauge reading

    I'm not sure- The ceramic resistor, If I remember correctly should be ~ 90 ohms. You might be able to find a used one on Ebay etc. However a new fuel gauge (that won't need the resistor) is usually around $50 LMC-example_LINK
  11. Jgonick

    1986 c2500 GMC fuel gauge duel tank issues

    That is looking correct. Also- check for loose nuts on fuel gauge terminals. There is also a resistor on the back of the gauge that might be bad. (Newer fuel gauges don't use it) I know you said you watched a lot of videos- this one is one of the best and explains it very well. LINK-Video...
  12. Jgonick

    Need help with my 700r4 TTC wiring harness

    I meant to mention this earlier- I found a relay that will work - Relay RY31 around $20 at Oreilly or other part stores
  13. Jgonick

    Need help with my 700r4 TTC wiring harness

    Just posting this if someone is curious. This is the wiring diagram (like the original posted in post #3-without EGR bleed.)
  14. Jgonick

    Need help with my 700r4 TTC wiring harness

    This was my understanding also- I also don't have an EGR (wires are just tied up out of the way.) The wiring diagram you posted is how my K10 is. Also just a side note- -there are several ways 700R4 are wired internally and externally depending the vehicle setup. ECM, Calf or Fed or Alt...
  15. Jgonick

    Need some help understanding turn signal lever, somethings missing?

    Here is a good resource about everything in the column and how it goes together. Inside GM tilt steering column LINK
  16. Jgonick

    Inside the steering column, what is the steering "rack?"

    another good resource- I found useful in the past. Link-to good write-up
  17. Jgonick

    Inside the steering column, what is the steering "rack?"

    good resource- LINK_Inside the GM Tilt Steering Column around page 25 is dealing with rack
  18. Jgonick

    What is this connector?

    brake switch ?? (Stop light switch-for tail lights) courtesy lamp ??
  19. Jgonick

    Steering column Pivot pin

    You need to tap it in until it is flush. Use something like a brass punch and hammer, tap it in carefully.
  20. Jgonick

    '87 Cruise/Wiper Switch Help or Info

    unfortunately the gap is normal- at least I never found one without it. Also my functions were slightly off and got worse- turned out the wiper switch-(inside the column) was the problem (it was wearing out where the stalk pushed into it). I replaced the wiper switch and everything lined up...
  21. Jgonick

    Stuck with low speed fan only

    Stuck with low speed fan only- you mean it only runs in the lowest setting- or it won't go into highest? If you mean it won't run in highest setting- Since you made sure the black wire on the relay is grounded good. Next- Check the orange wire running from the blower switch to the relay...
  22. Jgonick

    Heater not getting power

    Use my diagram and see if it makes more sense. BRN-50 coming from fuse box should go to selector switch. (It might also split off and go to generator/alternator light in instrument cluster if you don't have gauges) The selector switch is where you turn it on and choose A/C, heater, vent...
  23. Jgonick

    Heater not getting power

    To confirm- your truck has AC? are you using the diagram that I attached in my previous post or are you using one that looks different? I'm still trying to figure your setup Does you truck have gauges? (I'll explain later)
  24. Jgonick

    Heater not getting power

    What color wire is cut? I'm confused about which wire you found cut. What is "IT"? the cut wire? see attachment- your setup looks like this- correct?
  25. Jgonick

    LED Issues

    You can find them with a polarity reversing adapter sometimes. https://www.amazon.com/dp/B001GF1A0M/

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