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Relay - Turn Signal - Solid State - K-5 / 13A366 - Repro ~ 1968 Mercury Cougar   13a366,1968,1968 cougar,c8w,cougar,mercury,mercury cougar,relay,signal,turn,repro,K5,k-5,electronic,solid state,flasher,indicator,new,plasma,relay,signal,turn,k7,k5,k-5,k-7,16165,turn lamp

Relay - Turn Signal - Solid State - K-5 / 13A366 - Repro ~ 1968 Mercury Cougar
Item #: 16165

4.64 stars, based on 18 reviews
At last, there's a solution to a problem that almost all early Cougars suffer from. If the turn signal indicators in your dash only blink once, and then pulsate slowly without going out, you need this new electronic relay. It's a direct...
Relay - Turn Signal - Solid State - K-5 / 13A366 - Repro ~ 1968 Mercury Cougar
Customer since 2022
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K5 turn signal electronic relay replacement

It’s really nice to have the inside turn signals flashing again, after I upgraded to the exterior LED’s. This is literally and plug-and-play upgrade for any Cougar owner. It does seem a little expensive for this one relay, but it is nice to have everything working as it did originally in the car. The clicking sound is a nice touch, just like the old days!

Relay - Turn Signal - Solid State - K-5 / 13A366 - Repro ~ 1968 Mercury Cougar
Tenino, WA
Customer since 2014
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MUST HAVE for LED Update

My original worked fine with incandescent bulb. Once I installed the Plasma LED taillight bulbs, I would (almost) get 1 "click / flash" then the dash indicators were steady. Externally, the lights, including LED front turn signals, worked as they were supposed to. But it was irritating having the steady light on the dash.



Got this installed...Works PERFECT. It does take a bit of physical maneuvering to get access to the relay, but 15 minutes later...It was worth it!

Relay - Turn Signal - Solid State - K-5 / 13A366 - Repro ~ 1968 Mercury Cougar
Australia
Customer since
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Pros:
  • flashing pulse
Cons:
  • clicking sound volume

Relay solid state turn signal K5/13A366 for 1968 Cougar XR7

This part has stopped the fade off of indicator flasher on instrument panel but disappointing is the clicking sound, no way loud enough, can't hear it with window down in traffic etc..

Relay - Turn Signal - Solid State - K-5 / 13A366 - Repro ~ 1968 Mercury Cougar
Customer since 2024
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Signals Functionong.

A direct and improved replacement of the original. Can be tricky removing the old one and installing the new one under the dash. Provided instructions were very helpful.

Relay - Turn Signal - Solid State - K-5 / 13A366 - Repro ~ 1968 Mercury Cougar
Customer since 2018
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Slick

Easy to install. Works great. Sounds reasonably close to stock during operation.

Relay - Turn Signal - Solid State - K-5 / 13A366 - Repro ~ 1968 Mercury Cougar
Customer since 2014
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Pros:
  • Great fit
  • great action
Cons:
  • None

This is worth it!



I have to say I winced at the price, but then again I live in the past and grumble about $6.99 wines being $15.99 now. This substitute relay solves your problem just exactly as described! Your biggest problem will be seeing clearly at the peculiar distance of 8 to 12 inches if you wear progressives. Seriously, try some drug store glasses instead. The two screws aren't that hard to get to; grab your finest 1/4 drive ratchet so you can finesse the two 1/4 hex head screws. You will have to navigate around or disconnect nearby stuff for better access.



This is a valuable item that works right the first try. You'll feel even more cool if you don't remove the wrong relay first, like I did.


Relay - Turn Signal - Solid State - K-5 / 13A366 - Repro ~ 1968 Mercury Cougar
Germany
Customer since 2016
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Works great

I installed LEDs on my car so my indicator lights in the dash just stayed on.

This thing makes a nice click sound and finally my indicators work like they should.

Relay - Turn Signal - Solid State - K-5 / 13A366 - Repro ~ 1968 Mercury Cougar
Customer since 2019
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Pros:
  • Easy to install
Cons:
  • The harness may be a bit stiff

Works great

This really brought the click-click back into my dashboard turn signal indicators. For some odd reason, the tilt away steering wheel also started flipping to the right on its own. Before you'd have to push it that way. Who knew that they were related? Also, if anything else is grounded to or around this switch, be sure it stays that way.