The 64 1/2 uses a hydraulic switch and the 65+ uses a mechanical switch on the brake pedal. When I first installed my front disk brake kit, I had a "T" fitting that I used to get the brake light switch into the line.
I had an annoying problem that the added pressure of the disk brake system would ruin my brake light switch every month or three...
I finally converted mine to the 65/66 setup. The "post" on the brake pedal was not long enough to accept the mechanical switch and the retainer pin, so I changed the pedal out for a 65 type. You will also need the 65 type actuator rod, but you may already have it with your kit. The 64 actuator doesn't have the two "ears" on it that actuate the mechanical brake light switch. You will need to also extend the two witrs to the switch through the firewall to the new switch.
I'm so glad I converted mine. It has worked great ever since!
I had an annoying problem that the added pressure of the disk brake system would ruin my brake light switch every month or three...
I finally converted mine to the 65/66 setup. The "post" on the brake pedal was not long enough to accept the mechanical switch and the retainer pin, so I changed the pedal out for a 65 type. You will also need the 65 type actuator rod, but you may already have it with your kit. The 64 actuator doesn't have the two "ears" on it that actuate the mechanical brake light switch. You will need to also extend the two witrs to the switch through the firewall to the new switch.
I'm so glad I converted mine. It has worked great ever since!
