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On this particular install, we'll be working on a Ford 429 engine. After removing the distributor cap and the rotor, remove the e-clip holding the vacuum linkage arm to the points plate with a small screwdriver.
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Remove the two screws for the vacuum mechanism from the distributor body and set them aside.
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Carefully remove the two screws holding the points plate assembly to the inside of the distributor. Lubricate these screws generously to avoid damage to the threads in the distributor body.
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Remove the points plate assembly from the distributor. (This assembly should be saved because replacements are not available for this particular component.)
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Here are all the parts needed for the conversion. Press the nylon center ring into the bottom plate and ensure it is fully seated. Press the four supplied nylon slides into the top plate from the bottom side. Now assemble the adapter plates and the center ring. Align the two small cutouts in the top plate with the mounting holes in the bottom plate.
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Place the adapter plate assembly into the distributor and align the holes in the bottom plate with the holes in the distributor body. Now place the larger ring terminal of the jumper wire on one of the supplied 8-32 screws with the flat side of the ring terminal facing away from the head of the screw.
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Secure the adapter plate assembly to the distributor with the 8-32 screws, plastic washers, and aluminum spacers as shown. (Note: It is recommended that a thread lock compound be applied to the screws before installing them in the distributor in order to keep them from vibrating or working loose.) Route the XR-i wire harness through the hole in the distributor. Install the supplied grommet over the wire harness and insert into the cable end of the distributor.
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Apply thermal grease to the bottom side of the module. Install the module with the 6-32 hardware, but do not tighten. The jumper wire must be installed on the mounting ear with the metal pad. The flat side of the ring terminal should contact the mounting ear. Push the module as close to the points cam as possible without touching the points cam lobe. Tighten the hardware to secure the module in place.
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Replace the vacuum mechanism and secure with the two screws. Connect the black/yellow wire of the module to the Coil-terminal of the coil with one of the ring terminals. If the coil has an external ballast resistor wire, use the Scotchlock connector to connect the black/red wire of the module to the switched +IGN supply. If the coil has an internal ballast resistance, install the other ring terminal to the black/red wire of the module and connect this to the position terminal of the coil. Replace the rotor and distributor cap, and then start your engine and set the ignition timing according to manufacturer's specifications.
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