Used and tested original sequential unit for the 1969 - EARLY 1970 Mercury Cougar. This unit will come with a 90 day warranty. Keep in mind that if you want to use the brighter LED's on your car, this original sequential system will not work. If you want to change over to LED, you will need...

NOS sequential unit for the taillights of the Mercury CougarFord part # D1WY-13A366-A.1971 Cougars built from 2/1/71 to 5/15/71 used a unique sequential system in the trunk, D1WY-13A366-C. It uses two connectors, grey and light blue, that are no longer serviced. When the sequential system must be...

This two part black box is what encapsulates your sequential unit for all years 1969-1973. This of course will work with our reproduction sequential unit as well. This box was designed hang from a hook that is welded to the trunk floor just behind the driver side wheel well. *NOTE* Need help...

Good used part cut from the trunk of a 69-73 Mercury Cougar. This hook is concealed under the trunk mat and suspends the sequential unit over the trunk drop off area on the driver side. *NOTE* Need help diagnosing a Cougar turn signal problem? Victor Yarberry is the world’s most knowledgeable...

When your lights are sequencing too rapidly, causing the outer light to not fully illuminate, your original unit is most likely the culprit. This solid state unit replaces the small red (69-70) or green (71-73) flasher found under the dash, next to the radio. Replaces Ford part # D0WY-13350-A....

Used red plug wiring pigtail for the 69 Cougar sequential unit. 

This oddball sequential unit was only used from 2/1/1971 to 5/15/1971 and will be of no interest except for to select few. The differentiating factor is the hard plastic connectors. We can supply a reproduction of this unit but it requires that you send your old unit to to us so we can reuse the...

Used and tested sequential unit for the taillights of the late 70 - 73 Mercury Cougar. This unit will come with a 90 day warranty. Keep in mind that if you want to use the brighter LED's on your car, this original sequential system will not work. If you want to change over to LED,...

This new version sequential box works with either standard or plasma LED bulbs NOTE: Although your existing emergency flasher might work just fine with the new sequential unit, it is highly recommended that you also use the same updated electronic sequential flasher in its place to...

When your lights are sequencing too rapidly, causing the outer light to not fully illuminate, your original unit is most likely the culprit. This solid state unit replaces the small red (69-70) or green (71-73) flasher found under the dash, next to the radio. NOTE* Some vehicles have the wiring...

Will also fit late model Thunderbirds built after 10/15/68 This kit is what we recommend to fully convert your 1969 Cougar over to LED Plasma exterior lights. Our WCCC brand LED lights are amongst the brightest on the market and have been specifically engineered with the nuances of the Mercury...

Reproduction wiring pigtail repair kit for the sequential box on the 1969 - 1973 Cougar.  Included are: 1 five pin red connector1 five pin black connector

For most applications, we highly suggest you upgrade to our solid state version of this unit.  Ford part # C9WY-13350-A, Ford service replacement part # D0WY-13350-A. *NOTE* Need help diagnosing a Cougar turn signal problem? Victor Yarberry is the world’s most knowledgeable expert on the...

The D1WY-15A434-LSM LED Side Marker Light Adapter kit is required when the C9WY-13A366-AL or the TS-400 Sequential controller is installed with LED front turn signal and rear LED side marker bulbs on 1971 Cougars and other Ford vehicles with two rear side marker lights. An adapter is required for...

The D0WY-15A434-LSM LED Side Marker Light Adapter kit is required when the C9WY-13A366-AL or the TS-400 Sequential controller is installed with LED front turn signal and LED side marker bulbs on most 1970 and up Ford vehicles. An adapter is required for each side marker light (4 total). This...