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Old 11-27-2025, 06:35 PM
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scld1354 scld1354 is offline
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Join Date: Jan 2012
Location: Inland Empire, SoCal
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Quote:
Originally Posted by north View Post
My friend has a 68 GP setup he parted out many years ago. All the components look the same but are probably slightly different dimensionally.

I'm curious if the 67-68 big car hidaways inverts the headlamp bulb buckets the same way as the 68-69 A cars did?
Not sure about the buckets, but the 67 and 68 big car setups are two different systems. 67 uses one large vacuum actuator located in the middle that operated both headlight doors. The 67 doors raise. For 68, each headlight door has it's own actuator. The 68 doors lower.


Quote:
Originally Posted by north View Post
I don't have a schematic but it is easy to explain,

...vacuum source comes off the back of the carburetor with a check valve on the line.
... Line from carb goes to a T fitting, one line goes to top of driver side inner fender to connect to reservoir can (next to battery).
...other line from T goes through firewall at grommet to headlamp switch
...two other hoses go from headlight switch through firewall (same grommet) to a connector
...connector connects to two hoses integrated into forward headlamp harness.
...each hose exits the lamp harness near the horn support ahead of the rad support
...each hose goes to a T fitting with hoses going to both actuators (one hose feeds bottom of both actuators, the other the top)
Not looking for vacuum routing. I'm looking for component diagrams/schematics. Where are springs hooked up, where do brackets mount, etc.

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