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Step 4: 

Attach the new yoke that has been provided with Source Four Par Dimmer kit using the new hardware that has 

also been provided.

Step 5: 

Loosen the knurled bolt on the back of the lamp burner then pull the lamp burner out of the fixture. This lamp 

burner is no longer required. A new lamp burner is provided with the Source Four Dimmer kit. 

Step 6:

  Remove the HPL lamp from the lamp burner. Store the lamp in a safe place for re-installation later.

NOTE: 

To avoid premature lamp failure, do not touch the lamp glass. If you do, clean it carefully with 

isopropyl alcohol and a clean lint-free cloth. Allow the lamp to dry completely before operation.

Step 7: 

Using the two remaining bolts provided in the Source Four Dimmer kit, attach the Source Four Dimmer to the 

outside of the newly installed fixture yoke.

NOTE: 

The fixture yoke offers one set of access holes on one side for Dimmer attachment. Mounting 

holes are provided on the Source Four Dimmer to allow horizontal or vertical mounting to the 

fixture yoke. ETC recommends installing the Dimmer in a vertical orientation with the user 

interface parallel to the yoke (directed up or down). Alternative installation can be perpendicular 

to the yoke (with the user interface facing towards the front or back).

CAUTION: Do not install the Source Four dimmer positioned above a fixture that is in a yoke out position. 

Dimmer overtemp and failure may occur. 

Step 8:

  For Source Four dimmers with bare-end power input cables, attach a grounding-type attachment plug with 

integral cord grip rated for 120v or 240v and at least 15 amps. 

Step 9:

  Replace the lamp to the new lamp burner. Reference the related fixture user manual for instructions to “replace 

the HPL lamp: and ”center the lamp and adjust the field”. 

Step 10:

  Reinstall the lamp burner by aligning the bolt hole and tightening the knurled bolt.

 Reference the Source Four Dimmer Programming Guide for power-up and configuration instructions. 

 

See previous page for information on mounting to double clutch fixtures.

Installation to a Source Four PAR

NOTE: These instruction are specific to the installation of the Source Four Dimmer. Refer to the related fixture 

product user manual for all details and instructions that are related to the fixture. User manuals can be 

downloaded from the ETC website at  http://www.etcconnect.com/downloads.aspx

.

Step 1

:  Disconnect Power to the Source Four PAR.

CAUTION: Allow the Source Four and lamp to cool before proceeding with the installation.

Step 2:

  Remove bolts attaching the current yoke to the PAR fixture. 

Step 3:

  Remove yoke and set aside.

Installation to a Source Four Ellipsoidal or Source Four jr

The procedure for installation of the Source Four Dimmer to a Source Four ellipsoidal and Source Four jr fixture are 

similar. Use these same instructions for either fixture model.

NOTE: 

These instructions are specific to the installation of the Source Four Dimmer. Refer to the 

related fixture product user manual for all details and instructions that are related to the fixture.  

User manuals can be downloaded from the ETC website at 

http://www.etcconnect.com/downloads.aspx.

Step 1:

  Disconnect power to the Source Four.

CAUTION: Allow the Source Four and lamp to cool before proceeding with the installation.

Step 2:

  Loosen the knurled bolt on the back of the lamp burner then pull the lamp burner out of the fixture. This lamp 

burner is no longer required. A new lamp burner is provided with the Source Four Dimmer kit.

Step 3:

  Squeeze and lift the lamp retaining clip.

Step 4:

  Remove the HPL lamp from the lamp burner. Store the lamp in a safe place for re-installation later.

NOTE: 

To avoid premature lamp failure, do not touch the lamp glass. If you do, clean it carefully with 

isopropyl alcohol and a clean lint-free cloth. Allow the lamp to dry completely before operation.

Step 5:

  Using the two bolts provided in the Source Four Dimmer kit, attach the Source Four Dimmer to the outside of 

the fixture yoke.

Source Four 

Dimmer attached 

to Source Four

Source Four 

Dimmer attached 

to Source Four jr

NOTE: 

The fixture yoke offers one set of access holes on one side for Dimmer attachment. Mounting 

holes are provided on the Source Four Dimmer to allow horizontal or vertical mounting to the 

fixture yoke. ETC recommends installing the Dimmer in a vertical orientation with the user 

interface parallel to the yoke (directed up or down). Alternative installation can be perpendicular 

to the yoke (with the user interface facing towards the front or back).

CAUTION: Do not install the Source Four dimmer positioned above a fixture that is in a yoke out position. 

Dimmer overtemp and failure may occur.

Step 6:

  For Source Four Dimmers with bare-end power input cables, attach a grounding -type attachment plug with 

integral cord grip rated for 120V or 240V and at least 15 amps.

Step 7:

  Replace the lamp to the new lamp burner. Reference the related fixture user manual for instructions to 

“Replace the HPL lamp” and “Center the lamp and adjust the field”.

Step 8:

  Reinstall the lamp burner by aligning the bolt hole and tightening the knurled bolt.

Reference the Source Four Dimmer Programming Guide for power-up and configuration instructions.

Remove 

yoke and 

set aside

Install yoke 

provided with 

Dimmer kit.

Source Four 

Dimmer 

attached to 

Source Four 

PAR

Remove 

Hardware

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