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  1. Mark80K15

    SM465 shift rail position to install shifter, or top plate

    Hi, I just wasted a bunch of time trying to get the shifter back into SM465 properly. It kinda went in, but wouldn't shift anything. Eventually I got it in properly, and thought I would document what worked for me for other's benefit: It's all about the position of the shift rails. The pictures...
  2. Mark80K15

    Tightening down front yoke nut stops NP205 from turning

    Yeah thanks. In fact the GebBuilt videos are what gave me the courage to proceed. Since he just became a member, I’d sure like to talk to him… Anyone know how to reach @GebBuilt?
  3. Mark80K15

    Tightening down front yoke nut stops NP205 from turning

    I confirmed that for each NP 205 driving position (4H, 2H, N, 4L), the rail position was correct, and the input/output shafts turned properly. For example, N has each shaft turning (or stationary) independently, 4L has input turning twice for every front/rear output turning once, etc...
  4. Mark80K15

    Tightening down front yoke nut stops NP205 from turning

    Hello, 1980 GMC K15 SM465/NP205. I broke the SM465/NP205 adapter, so I took the time to apply new NP205 seals/gaskets and the JB Fab twin stick setup. I didn't intend a full rebuild, but I wound up removing everything except the idler gear assembly. In fact the front shaft just kinda fell out...
  5. Mark80K15

    NP205 shift rail help!!

    Hi Kit. Did you ever complete this? I'm asking because I'm about to do the same thing to mine, in order to install twin stick shifters. That requires modified shift rails. I don't have any advice to give you yet, but I can say there is an excellent video by the twin stick manufacturer that...
  6. Mark80K15

    Looking for a NP205 shift knob 4LO N 2HI 4HI

    Hello Cris, have you had any luck yet?
  7. Mark80K15

    Anyone running wipers bigger than 16" oem?

    I found the ANCO 48-12 Wiper Blade to Arm Adapters. The URL for them that I posted April 7 no longer works. All I can say is I found them at a Gilbert Supply store in BC. They also carry the Bosch Clear Advantage blades. We tried to install the adapter to the blade right on the counter. Didn't...
  8. Mark80K15

    Anyone running wipers bigger than 16" oem?

    I would have liked to get the ANCO adapter that @Turbo4whl suggested yesterday, but that website wants $92.57 USD shipping to British Columbia. Not doing it. ANCO customer support confirmed they do not sell these adapters separately. ANCO's documentation for their 16'' 7mm Bayonet Beam Wiper...
  9. Mark80K15

    Anyone running wipers bigger than 16" oem?

    Thanks very much everyone, I'll check out the link @Turbo4whl provided. And I take it 18" aren't a problem based on comments earlier in the thread (I did see the comments regarding a weak wiper motor).
  10. Mark80K15

    Anyone running wipers bigger than 16" oem?

    I've lost too many wiper blades from my 1980 GMC K1500. After reading this thread, I'd like to keep my original bayonet style arm. I think I'd like to: - Use the J-hook adapter that @bucket suggested - Use 18" Bosch Clear Advantage wiper blade Can you please help with my questions? - Does...
  11. Mark80K15

    Driver Side Gas Tank Sending Unit no longer available

    Sorry, no longer available.
  12. Mark80K15

    Let's see those 4x4 Squares On Dirt!

    Some snow, some dirt here in Sicamous, British Columbia
  13. Mark80K15

    No driver's side rear turn signal or brake light, because no power at bulkhead

    Ok, got a happy ending. I tested for continuity from the firewall side of the connector (at the steering column) to the bulkhead in the engine side of the firewall, and there was continuity (thank god). Then, with that connector disconnected, I switched to IGN on and was going to jump #19 Dk...
  14. Mark80K15

    No driver's side rear turn signal or brake light, because no power at bulkhead

    Yes thanks, @77Dmax , I have a tilt column. I see the switch on Rock Auto and it clearly illustrates the switch together with the harness, right down to and including the connector I was asking about. The wires are colored correctly as the GM original. I'm going to disconnect the connector at...
  15. Mark80K15

    No driver's side rear turn signal or brake light, because no power at bulkhead

    Ok, @Jgonick thanks very much.
  16. Mark80K15

    No driver's side rear turn signal or brake light, because no power at bulkhead

    No, I think the connector in "bulkhead_cab_side.jpg" is the inside portion of the bulkhead. I just included that to help my narrative. I'm not asking about that at all. I'm asking about the connector in "termination_of_18_yellow.JPG".
  17. Mark80K15

    No driver's side rear turn signal or brake light, because no power at bulkhead

    Thank you all. @Jgonick, "turn-signal-switch-plugged-in.jpg" is very helpful. Are you showing the connector that I'm asking about or the signal switch? Or are you saying they are the same thing? I think @Ricko1966 refers to the connector in your picture as a long skinny electrical junction, so I...
  18. Mark80K15

    No driver's side rear turn signal or brake light, because no power at bulkhead

    Hi, thanks in advance for help. Sorry to post this but I couldn't find my particular problem. Everything works for both front and rear signal lights, all markers, signal indicator light on dash, hazards, and rear brake lights and backup lights, except for the rear signal light and brake light...
  19. Mark80K15

    1978 Scottsdale Drag Link Question

    Well, I've completed the wheel alignment and driven my truck @ 60 MPH and more. Steering seems real good. So I conclude that the drag link angle is just fine, which in my mind lays to rest the urban myth that the drag link must be horizontal.
  20. Mark80K15

    Wrong brake calipers?

    I just went through the same thing. I got it resolved. Yes, there is a Right and Left fitment, and yes, you can tell because the bleeder must point up. Also note the calipers fit either 2WD or 4WD, not both. My truck is 1980 K15, so I got calipers for 1980 4WD. This is the same style as @AZ...
  21. Mark80K15

    Changing front rubber brake lines. Where’s the inner clip?

    Detail of the clip on the outside of the frame. The replacement hose should have that clip installed, and you don't do anything with it.
  22. Mark80K15

    Changing front rubber brake lines. Where’s the inner clip?

    I found this post because I had the same question: where are the clips on both sides of the frame? I needed to know how to disassemble the old brake line (from the caliper to the frame rail) without damage. I don't think that has been answered in this thread. There is a clip on the brake hose...
  23. Mark80K15

    Driver Side Gas Tank Sending Unit no longer available

    Just a reminder to all, the gas tank sending unit I described in this thread is still available for free.
  24. Mark80K15

    1978 Scottsdale Drag Link Question

    One more picture:
  25. Mark80K15

    1978 Scottsdale Drag Link Question

    I just installed a 2" ORD lift and used their drag link (Factory Push/Pull Steering with Jam Nuts, SKU U9015-S4.75), the Moog drag link ends ES2026R and ES2027L, and their 2" Drop Pitman Arm (SKU CA50-I). I thought I'd add some pictures to show how the assembly went together, and the angle of...

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