Delco Radio Owner's Manual Model 633; Delcotron Generator Installation

This model of the Delco Radio is a six-tube super-heterodyne receiver designed for operation with a HEADER type speaker. It comprises the best in automotive radio engineering, featuring Syncro-Tuning—the newest, most efficient antenna circuit yet developed, and Sensitivity Control.
The speaker and remote control unit are supplied in separate packages and are available in a wide variety of types and styles, depending upon the make and model of car the unit is to be used on.
The package contains:
Antenna—
See Instructions in antenna package.
Chassis—
This receiver may be installed on any car with Positive or Negative ground without any changes of wiring.
When possible, locate the chassis on the driver's side of the dash, over the steering column, with the removable cover plate facing the floor. This position places the control shafts on the end of the case facing the center of the car.
Locate the position of the mounting holes by means of the template included in the package. Drill the holes, using a 3/8 drill, and scrape the paint from around the holes on the engine side of the dash to insure a good ground connection as there is no other ground connection for this receiver.
Make sure that all tubes and the vibrator are pushed well down in their sockets and that all the grid clips are properly in place on the top caps of their respective tubes.
If a six-volt storage battery is available, check the receiver for normal operation before permanently installing it on the car. The antenna lead and control unit may be temporarily connected for this test.
Insert the two receiver mounting studs in the back of the receiver case with the burred threads nearest the receiver to make sure that these studs do not enter the case far enough to cause damage to the receiver parts.