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  1. mtbadbob

    GMC Grill

    Of course, I never considered the signal/marker light location into the equation! I love the look of our truck's grilles the best myself!
  2. mtbadbob

    Tach not registering

    I'd maybe send your tach to someone like Redline Gauge and have it tested, possibly repaired & recalibrated.
  3. mtbadbob

    GMC Grill

    Ad says Fast shipping!! Multiple distribution centers!! Also claims it should arrive in a week. It does say at the top of the page "This item is out of stock"
  4. mtbadbob

    GMC Grill

    Isn't that deciphered in the headlight bezels??
  5. mtbadbob

    What have you done to your square lately??

    Some of those carbs had a plug over the f/a screw that you had to drill and then pop out to get at the adjustment screw. I've seen that on a lot of motorcycles as well. In fact, I still have a little flat blade screwdriver bent at a 90 to adjust Harley carb's, as the fuel tanks stuck out so far...
  6. mtbadbob

    What have you done to your square lately??

    Sometimes the contact pin will rotate, free from the threaded body of the switch. I squirted mine with a little PB Blaster and rotated it by hand before I screwed the switch in. I'm not sure if the wire still twisted as I tightened the switch, but all is well with the interior lights when the...
  7. mtbadbob

    What have you done to your square lately??

    I just fixed my passenger side switch also. The switch was fairly new, but there was no wire attached. I disconnected the rubber wire grommet from the cab that goes to the door, then I was able to stick my fingers in there and grab the door switch wire that was bound up between the kick panel &...
  8. mtbadbob

    Changing from 80 square headlight back to 74-78 round headlight question.

    Yeah, all the adjuster mounting locations are different.
  9. mtbadbob

    bow tie for c10…

    You can make any of them work if you try hard enough. Dimensions are the key, along with how flat or angled they are. I did an '84 Monte SS clone and I used Trailblazer SS emblems on it on the doors & trunk lid. It looked classy, but not original.
  10. mtbadbob

    bow tie for c10…

    It looks like your grille has a recess for the factory bowtie. Dimensions would help, and you could probably make it work with some 3m tape. Some emblems were flat, some fit the recess. The changed them quite a bit over the years.
  11. mtbadbob

    This makes 0 sense to me! Heater hose route

    So, is there supposed to be a third nipple from the core for that line?
  12. mtbadbob

    Tach not registering

    Does that brown wire run right into the firewall? There's a good chance that the po removed the stock filter when he swapped the aftermarket tach. Now that you're re-installing the FT, a filter will more than likely make the tach work.
  13. mtbadbob

    Tach not registering

    I know when the filter fails, the tach stops working. Had to replace them on a Monte I had.
  14. mtbadbob

    Tach not registering

    A good connection might make a difference. A tach filter is the wire that usually runs from the distributor through a condenser looking thing that mounts to the firewall near the distributor, then continuing through the firewall to the tach. It usually has a rubber grommet that seals the hole...
  15. mtbadbob

    This makes 0 sense to me! Heater hose route

    Not sure what the line to rad is for, maybe it had a secondary return line for whatever reason.
  16. mtbadbob

    Tach not registering

    I'm wondering if those require or have a tach filter?
  17. mtbadbob

    Tach not registering

    I pulled this cluster from a '78 gas Blazer, looks the same as pic from jimmy78. Sold it to a member on this forum.
  18. mtbadbob

    Quadrajet Choke and Fast Idle Linkages

    The front pull off should somehow be in contact with the green lever, at the end of the adjustment screw I think? This should open the choke as the engine warms & pulls vacuum. The AJ tab is just a weight to release the choke with the blip of the throttle when engine warms. It's been a while...
  19. mtbadbob

    Help with malfunctioning cluster.

    It's easier to just unhook speedo & pull the whole unit out. The lights just twist into the back of the housing onto the circuit board.
  20. mtbadbob

    Help with malfunctioning cluster.

    I'm not sure about the 84 models, but I believe the sending unit wire on my '87 is a medium brown color, so I guess you could call it tan. It should have a single spade terminal in a plastic clip about 1" long and it comes around the back of the engine and drops down behind the exhaust manifold.
  21. mtbadbob

    Any recommendations for a new dash bezel?

    I picked a nice one from a bone yard. I painted the fuel gauge & clock opening, and took a silver paint pen and re-did all the raised edges, then I bought a new brushed aluminum overlay from LMC and it looks brand new. I may have an extra one that isn't too bad, but some of the earlier trucks...
  22. mtbadbob

    Fuel Valve replacement (I made it worse)

    Yeah, the hoses going to the valve are short & tough to get them on & tight for sure!
  23. mtbadbob

    Dim Dash Lights

    Looks like you have a bulb out on the left of the speedo!
  24. mtbadbob

    Fuel Valve replacement (I made it worse)

  25. mtbadbob

    Fuel Valve replacement (I made it worse)

    Yes, one switch stay's centered and rocks over to the tank selected but returns to center. The other, is a typical rocker that stays in position to the selected tank. As I said, the factory harness (if it's still there) dictates what switch you need as the 3 prongs on the back of the switch are...

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