Everything you wanted to know about '67 Sequential Signals

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preaction
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Re: Everything you wanted to know about '67 Sequential Signals

Post by preaction » 28 May 2015, 12:34

it seems that with key on turn signal turned either way I get sequential motor going and out board blinking middle intermittent blinking and no blinking on the inboards and dash indacators illuminated, both, there bright and lightly pulsing. They blinked slowly with the hazards on. all of this was with 12 volt power added to K 10 relay in the trunk, does this show that the K7 turn signal relay is bad, Im not sure as there is power to the sequencer motor, thanks Paul. Also is a circuit breaker resettable on these cars, or do they act more like a fuse ?
67 XR7 6.5 liter auto AC tilt pdb ps thermactor vinyl roof console SS wheels lime frost

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coachJack
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Re: Everything you wanted to know about '67 Sequential Signals

Post by coachJack » 28 May 2015, 21:31

You need to test the lights with the battery fully charged AND the engine running. The K7 relay provides power to the Sequential Motor, where the Sequential motor directs the power to the inner, middle and outer taillights. The blinking of the taillights is caused by the 3 cams that are internal the the sequential motor. It is possible that the cam contacts are worn or have deposit build up on them, you can open up the sequential motor and clean them with de-oxit or similar electrical cleaning products.

When the K10 relay is powered, it only connects the inner and outer taillights from the sequential motor to the Main sequential relays K8/K9. When you turn on the emergency flashers, it then disconnects power to the K10 relay thus the Sequential motor only directs power to the middle taillights. Note the sequential motor always provides power to the middle taillights when the SQM is powered!

Coach Jack

preaction
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Re: Everything you wanted to know about '67 Sequential Signals

Post by preaction » 29 May 2015, 13:23

I took the sequential motor in for a contact cleaning and continuity test and its in great shape, so now I'm all most there. The head lights work with full tail lights. The hazard lights are working, blinking in the front valance, left and right indicators blinking, and the center rear lights blinking also with the brakes operating. Turn signals are the problem, left turn activated and there is blinking in the front valance, both dash indicators somewhat blinking, both are illuminated, and only the rear center blinking. This is the same with the right side and both sides work as described with the brake applied. All the while the sequencer motor is turning. All of this testing is with the engine running and a fully charged battery as all of the lights operating are nice and very bright.
67 XR7 6.5 liter auto AC tilt pdb ps thermactor vinyl roof console SS wheels lime frost

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coachJack
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Re: Everything you wanted to know about '67 Sequential Signals

Post by coachJack » 29 May 2015, 18:03

Paul,

Have you probed to make sure the SQM is outputting voltage on the inner and outer circuits? If the SQM is sending voltage out the inner 436 and outer 438 circuit, check to see if the K10 relay is also putting out voltage on the 436A and 438A circuits. These two circuits are then fed to the K8/K9 Main sequential relay where these relays will allow the appropriate left or right taillights to illuminate. Below is a diagram of the P79 connector that plugs into the K10 relay. Note, you can bypass this relay by making two jumper wires with male connectors at each end. Place one connector on 436 and the other connector of the same wire onto 436A. Do the same with the other wire jumping 438 and 438A.

[attachment=0]k10 p79 connector.jpg[/attachment]

BTW, do this set of tests with the brakes OFF.

Coach Jack
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k10 p79 connector.jpg
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preaction
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Re: Everything you wanted to know about '67 Sequential Signals

Post by preaction » 30 May 2015, 19:03

Hi Coach Jack, I think I lost focus when you suggested to jump out K10 earlier but I did that today and the tail lights sequenced great, I believe I thought that it wasn't the problem because it was replaced with a electronic K10 switch previously. So I need a new K10 also when jumped out both dash indacators were blinking at the same time can any thing be done about that, thanks Paul.
67 XR7 6.5 liter auto AC tilt pdb ps thermactor vinyl roof console SS wheels lime frost

preaction
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Re: Everything you wanted to know about '67 Sequential Signals

Post by preaction » 01 Jun 2015, 12:01

Is a electronic part replacement any better that a NOS one if available ?
67 XR7 6.5 liter auto AC tilt pdb ps thermactor vinyl roof console SS wheels lime frost

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Re: Everything you wanted to know about '67 Sequential Signals

Post by wondrousworks » 29 Mar 2017, 14:09

I am having an issue that I can't seem to figure out. I have a 1967 base model with signal issues. I have replaced the trunk relay unit with the cougars unlimited solid state unit (c7wy-13a366-as), I have replaced the K7 relay with the cougars unlimited replacement (c7wy-13a366-cr), and I have replaced the turn signal/hazzard switch (non-tilt) in the column. With the Key off both of the signal indicators in the dash panel stay illuminated. With the key still in the off position if I move the turn signal switch in either the left or right position the indicators turn off but do not operate. When I turn the key on and the left blinkers work perfectly but I have no right hand blinker function. I also have no brake lights but the brake switch wires get very warm. I have disconnected the brake wire output for now until I solve the problem. Any help would be appreciated. Thank you...

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Re: Everything you wanted to know about '67 Sequential Signals

Post by cougarsunlimited.net » 14 Apr 2017, 19:37

I suspect that the turn signal switch pins are not in the correct location. Apparently, there is power on the orange/black wire feeding the K7 relay all the time. Verify that the turn signal switch is working correctly using an ohmmeter with the switch unplugged. Also visually verify that turn switch pins are inserted into the correct location on the both sides of the connector. A turn signal switch diagnosis guide and a 1967 Cougar turn signal switch connector diagram is available from my website: www.cougarsunlimited.net

If the brake light switch is getting warm, current must be passing through it. Use a voltmeter to check for power on both sides of the switch. If the switch is stuck on, remove it to see why.

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Re: Everything you wanted to know about '67 Sequential Signals

Post by xr7g428 » 14 Apr 2017, 21:15

I wish we had a like button! Thanks for jumping in Vic!
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Legendary Cougar Magazine
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Re: Everything you wanted to know about '67 Sequential Signals

Post by pellets4fuel » 31 Jan 2018, 12:13

This may or may not be turn signal related. I have a typical problem of dash indicator lights just staying on and pulsing lightly when turn signals or flashers on, but turn signals themselves work fine. I will do some checking with the appropriate relay, as well as my ground by alternator etc. The only way I have tested my lights up to this point is with car not running with just a trickle charger battery maintainer on. Don't matter if battery is full, or down a tad.
The other problem I have though I found when I was checking to see if the dash indicator lights came on when the headlights were on. Noticed that my front only marker lights only come on with the headlight switch in the "first out" position. As soon as I pull it "full out" they do not work. My front turn signals work fine in either location. My dash indicator lights act the same also in either position, just come on when activating turn signal and flasher and stay lit for the most part with just real faint pulsing. Could the two problems (dash indicator lights, and marker lights not working in "full out" position) be related in anyway? What would the possible resolve be for marker light issue if unrelated?
Thanks!
David
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#16306 1967 Lime Frost S-code, Ivy gold interior
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