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  1. Chris64

    Instrument panel light question

    I did not see an instrument panel ground wire...hmm. It's just a harness and the speedo cable and the oil line. I did see a wire grounded to the parking brake bracket so I'll chase it down.
  2. Chris64

    Instrument panel light question

    I've rebuilt the instrument panel with a new housing and new speedometer. This whole project started with almost no dash lights working. I replaced all the bulbs and the only one I couldn't get resolved was the right blinker in the dash (the outside lights are blinking). 100% the cluster is...
  3. Chris64

    Instrument Panel housing

    I couldn't find it and any of those. You're right - I searched and couldn't find them but they were hiding right in front of my face :hahano:
  4. Chris64

    Instrument Panel housing

    My dash cluster is finally looking pretty good, but the white plastic housing is insanely brittle. The left mount tab was already broken and, while putting it back together, one of the top tabs that holds the dash bezel in place just snapped off. I think I can repair it but it's all still super...
  5. Chris64

    Keyless entry upgrade

    I used to install alarms. GM are a pain compared to most vehicles in that you can't just send a signal to the switch wires. You'll need 2 Bosch style relays. IIRC the wiring was 85 to remote controller, 1 to lock and 1 to unlock 86 to power (assuming the remote sends a ground signal) 30 to...
  6. Chris64

    Speedo working but Odometer not working

    OK, So I finally took my whole cluster out so I could address my dead right blinker, the light that powers my fiber cables and of course my odometer. I have the little tumbler removed. It's clearly stuck. I can spin some of the tumblers if I "unwind" it and then spin them forward but once it...
  7. Chris64

    Switching to dumbo mirrors

    I actually do, but it didn't really line up to anything for me. I ended up just eyeballing it. I think I centered the top with the back of the wing-window.
  8. Chris64

    Debugging my AC problems

    I have no idea what's in it now. I really haven't touched it in anyway. This is sorta just the next step for me as I try to put my dash back together. I figured before I take it to a shop to recharge it I should probably replace the leaking things. *shrug*
  9. Chris64

    Debugging my AC problems

    OK - I'm high-jacking my own thread with a question that is still on topic. AC systems in these vehicles seem pretty simple as far as parts go. a compressor, a couple vacuum controlled doors a blower and a radiator thing. I don't know how any of it works but I get the idea. The line that runs...
  10. Chris64

    Speedo working but Odometer not working

    So far it seems like my best option is a new speedo ($100) https://www.lmctruck.com/interior/gauges/cc-1973-89-speedometer And for a tach ($110) - I'm unclear if they make one that has a fuel gage. https://www.lmctruck.com/interior/gauges/cc-1973-87-reproduction-tachometers5000rpm and relocate...
  11. Chris64

    Speedo working but Odometer not working

    So now that I polished my gauges and connected my speedo I can actually see how fast I'm driving. Today it occurred to me while taking my truck for a little drive that the odometer isn't moving. I guess I'll be pulling the whole cluster out after all. I'm just curious about two things: 1)...
  12. Chris64

    Rebuilding my dash pad.

    If I had skill to do this, this makes way more sense. Especially that bezel seam, but that has to be perfect. I may end up getting a chance to try sadly.
  13. Chris64

    Rebuilding my dash pad.

    OK, so gluing went sort of as planned. Here's what I learned: * It showed every little imperfection underneath. Most people put a thin padding layer here and I'm guessing that's why. * All the hot-rod shows have the upholstery guys cut a small channel in the foam for the stitch to fit. Now I...
  14. Chris64

    Rebuilding my dash pad.

    OK, here's where things stopped going according to plan. Any time I've worked with vinyl cloth in the past, it was on door panels, amp racks or speaker boxes. Basically, things I could staple. My experience with contact cement has not been good. Maybe now will be different. So I started with...
  15. Chris64

    Rebuilding my dash pad.

    Then I started sanding it smooth. The optimal tool for this was a portable belt sander followed up with a block sander. That went pretty smooth. Here's a test fit. At this point I'm not sure if what I plan to do will work. All ready for vinyl!
  16. Chris64

    Rebuilding my dash pad.

    OK, well I got back to the dash project... I'll share what I learned so far to serve as a warning to others. So I just used contact cement to attach a bunch of foam pieces. I'm not sure what I could've done better here. It's hard to manage large pieces but in the end seams will show through on...
  17. Chris64

    Removing instrument panel - dealing with the oil pressure line

    I'm running out of plenum for them to have a nest built in and the nice thing about plastic is it can be cleaned. The only area remaining is the blower motor and around the heater core (which looked OK looking down from the resistor).
  18. Chris64

    Stripping paint off instrument panel

    I ended up just painting it flat black which looks identical to the stock lower column cover. Then I used a chrome pen to highlight the letters. I considered trying to do the surround around the gauges but I knew I didn't have a steady enough hand for that. The only problem was I didn't go...
  19. Chris64

    Debugging my AC problems

    I don't know how else to describe the little box with all the vacuum lines that sits behind the climate controller. I call that the vacuum module. It's the only thing that is connected to the lever when you switch the AC on. I have no idea what refrigerant or oil. Whatever was stock in 1974. Is...
  20. Chris64

    Debugging my AC problems

    I haven't found any other threads with this specific problem. 1974 K-20 Cheyenne - factory air The problems so far: * Fan speed is always on what I think is low. I replaced the fan controller and it behaves the same. Changing the speed does nothing. I think I need to replace the resistor, but...
  21. Chris64

    LMC AC controller has too many detents

    Well I went ahead and installed it as-is because I figured I'm probably not going to find anything better, returning is a hassle and I have bigger fish to fry. The good; it really looks great. Identical to stock. BUT, the bad; The holes to mount it are as big as the dash holes. I ended up...
  22. Chris64

    Polishing up the gauge lens

    So as usual, I started a task - get my AC working - and then I got distracted with other things. * Why aren't my dash lights working? So while I was trying to take out my cluster, I removed the lens and tried out some plastic polish I had laying around with a foam pad in a cordless drill. It...
  23. Chris64

    Removing instrument panel - dealing with the oil pressure line

    This is a good description of where I'm at now. Dash pad, glovebox and bezel removed. left and right plenum's removed. Now I need to figure out the defrost ducts and anywhere else a mouse might have turned into a bathroom.
  24. Chris64

    Removing instrument panel - dealing with the oil pressure line

    This is a strange thing that I haven't found any help on the internet at all. It's a 1974 K-20. I was trying to remove the instrument panel and I'm not sure what to do with the oil pressure line. Everything I see online only talks about the speedo cable and the power harness, which are both...
  25. Chris64

    Proportioning Valve and Bleeding

    I had this problem too, which sucked because my family seems to sense when I need a brake pumper and they disappear. I ended up wrapping the thread with anti-seize which seemed to do the trick. Also because one of the bleeders was completely seized in the caliper. I still prefer the old pumping...

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