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  1. Jgonick

    No power at all not even buzzing or dash lights

    Could be a short in the ignition wire (purple wire) Or possibly a bad ignition switch on the column. - when everything goes “black” is a fuse or fusible link blown? If so which one. If nothing is blown- I would start with checking the battery connections (like you did) and probably replace...
  2. Jgonick

    Instrument cluster lights

    Several different things can cause dash lights not to work. Start with the easiest- check the fuse. Check the ground (sidewall by emergency brake). Possibly the headlight pull switch (it rotates to dim dash lights) might be bad or have a loose connection.
  3. Jgonick

    Wiper Control Module

    I must be confused. I was thinking it was like this. (G & A wouldn't plug into anything but open slots)
  4. Jgonick

    Wiper Control Module

    Just because I'm curious (and too lazy currently to check it on my truck) but can't you just pull the pulse module out completely and plug the switch connection directly. I realize you wouldn't have the variable speeds, but High,Low,& mist would work. Or am I missing something? I haven't...
  5. Jgonick

    Problem with Lights, Dash and Tail

    I believe he was referring to the Headlight pull switch. (It rotates to set brightness of dash lights) If it goes bad it can cause you to lose dash lights.
  6. Jgonick

    1985 K/10 Ps Door Lock Not Getting Power

    If both switches activate the driver side- the switches and switch wires should be fine along with the relay. (assuming it is an original relay) Both wires to the actuator should be to ground when not in operation. They are grounded at the relay. The switch powers the relay- the relay opens...
  7. Jgonick

    1985 K/10 Ps Door Lock Not Getting Power

    I would start tracing back from the actuator if it's not getting power. Somewhere between actuator and relay. Maybe if you're lucky a connector isn't plugged in well. (there should be one before entering the door- tan & gray wires)
  8. Jgonick

    Horn wiring

    This image is typically how the horn works. It all depends on what size fuse is used in the circuit (My guess is 20 amp) and how many amps your horn pulls. Also you have other things on the circuit that are also using amps. Probably Dome light & cig lighter etc... Your picture shows...
  9. Jgonick

    1987 R10 oil pressure switch location/leaking

    Just throwing this out there. Possibly it's the knock sensor.
  10. Jgonick

    Tbi alternator wiring

    The terminal should be labeled P,L,F,S or P,L,I,S See image for explanation.
  11. Jgonick

    Bulb and ignition switch questions

    This links has all bulbs by year of vehicle- scroll down the page to your year Bulbs by year Also included image from 73 manual
  12. Jgonick

    Help with som warning light connectors

    ORN/BLK, BLK, BLK = glow plugs YEL, PNK/BLK, PNK/BLK = water in fuel PNK/BLK, GRY = low coolant
  13. Jgonick

    Power window connector

    From my 85. Yellow circle & red arrow are power windows. Second image- look at dotted pink line Edited: --Just saw this was an old post brought back. I should of read the date. Oh well, maybe it will help in the future.
  14. Jgonick

    Headlights flicker and radio cuts out when driving over a bump

    My thought- those are the lines that deliver power/current to everything. Battery & alternator (& junction block) are connected there. Headlights draw a lot of current so if the wires are bad they can't supply enough continual current. - this is an over simplification, but you get the point...
  15. Jgonick

    Headlights flicker and radio cuts out when driving over a bump

    Fusible links are usually 4 gauge sizes smaller. Example- Image 2. Red dot is wire - 5mm(10 awg) and blue dot is fusible link- 2mm(14 awg). also I attached conversion table because a lot are metric sizes in diagrams
  16. Jgonick

    Starter wiring problems

    Hopefully you should be able to trace the wires with this diagram. The fusible links (THERMO HW) can be identified by plastic barrels unless they have been replaced.
  17. Jgonick

    Headlights flicker and radio cuts out when driving over a bump

    Looking at wiring schematics for 87/88 it appears to be 5 PPL (10 gauge) Which is odd to me, because earlier than 87 the starter wire was 3 PPL (12 gauge) You might want to get someone else to confirm. Edited--- I forgot it went to R/V. I bet I was looking at 4th generation wiring. Sorry
  18. Jgonick

    Starter wiring problems

    The wiring diagram
  19. Jgonick

    Picture Please: No Spare Tire Holder

    Typical under bed mount.
  20. Jgonick

    Dose anyone have any wiring diagram for a 87 Silverado 4x4

    https://www.gmsquarebody.com/threads/1973-1991-service-manuals.14499/
  21. Jgonick

    Wiring harness help 83 gmc k2500

    Being that it was a diesel. The other wires might be the ones marked by the blue arrow on the diagram These links might be easier to see. Link 1 Link 2 Link 3
  22. Jgonick

    Wiring harness help 83 gmc k2500

    1st picture is your transmissions TCC wires. Mine connects to female connector directly above brake MC.
  23. Jgonick

    need Identification

    Found it. Now off to trace out cruise control wiring...PO remover everything in engine compartment but left all the electronics under the dash.
  24. Jgonick

    need Identification

    black-white & blue. I believe I figured it out. Power lock relay?? seeing if I can find the wiring diagram to confirm
  25. Jgonick

    need Identification

    I'm cleaning up my wiring on my 85 K10. This sits directly behind the convenience center on the firewall. I haven't been able to locate it on the wiring diagrams. Thanks

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