Johnson Service Promotion Bulletin SPB-341 - Universal Junction Box S-28

Johnson Motors Service Promotion letterhead

May 2, 1963SPB #341

SUBJECT: UNIVERSAL JUNCTION BOX S-28

Previous testing setup with several connections and components — BEFORE
Past requirements for tank testing of electric starting motors.

Universal Junction Box in a simplified test setup — AFTER
Present requirements for tank testing of electric starting motors.

Now available from Stevens Experimental Co., is a new Universal Junction Box. The new Universal Junction Box, is in reality a portable test room/on the water, electric starting/analyzing unit. This unit will operate all past, present and foreseeable future production electric starting Johnson Motors. Also adaptable to competitive brand motors. The unit controls the following circuits. Electromatic Shift, electric starter (6 or 12 volt), battery ignition, starter solenoid, electric choke, magneto stop. When combined with the AT-100 Stevens AC-DC Circuit Analyzer, the Alternator and 10 ampere DC generator can be tested to make certain they are functioning properly.

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Universal Junction Box and AC-DC Circuit Analyzer testing V4A-75 horsepower motor — Universal Junction Box combined with AC-DC Circuit Analyzer testing V4A-75 H.P. motor. Unit is controlling electric starter, battery ignition, Electromatic Shift, and Alternator field/output circuits.

Universal Junction Box testing RK-40 horsepower motor — Universal Junction Box testing RK-40 H.P. motor. Unit is controlling electric starter, Electromatic Shift, and magneto stop circuit.

Universal Junction Box and AC-DC Circuit Analyzer testing RK-40 horsepower motor — Universal Junction Box combined with AC-DC Circuit Analyzer testing RK-40 H.P. motor. Unit is controlling electric starter, Electromatic Shift, magneto stop, and 10 ampere DC generator.

Universal Junction Box and analyzer testing V4S-50 horsepower motor on boat — Universal Junction Box combined with AC-DC Circuit Analyzer testing V4S-50 H.P. motor on boat. Unit is controlling electric starter, electric choke, magneto stop, and 10 ampere DC generator. Note - The boats electrical system has been disconnected. Therefore, the motor is being tested alone, as would be done in the test tank.

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SPB #341

Universal Junction Box S-28 with frame — Universal Junction Box S-28 and frame.

AT-100 analyzer being inserted in S-28 junction box frame — AC-DC Circuit Analyzer Unit being inserted in frame of Universal Junction Box.

Complete S-28 junction box and AT-100 circuit analyzer — Universal Junction box with AC-DC Circuit Analyzer as a unit. (Consists of one each S-28 and AT-100).

We would suggest that you place your order for the Universal Junction Box immediately, so that you will have it in your possession with the least possible delay. The Universal Junction Box is shipped complete with operating instructions, but an early order will give you ample time to completely familiarize yourself with the unit prior to the rush of the boating season.

If you already have the AT-100 AC-DC Circuit Analyzer in your possession, order only the Universal Junction Box S-28 - $47.50 net, F.O.B. Waukegan.

If you do not already have the AT-100 AC-DC Circuit Analyzer order one each S-28 and AT-100 $77.25 F.O.B. Waukegan.

For other uses of the AT-100 Circuit Analyzer refer to Service Bulletins 832 and 849.

Do not order these units from Johnson Motors, Outboard Marine Corporation's Parts Depot, nor from your parts distributor.

The units are available only from the Stevens Experimental Company, 2015 Grand Avenue, Waukegan, Illinois (Illinois resident dealers add 4% state sales tax).

Johnson Motors, Jack Penland handwritten signature and Service Promotion identification

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