This offshore switch is assembled with plated steel rivet contacts as opposed to brass rivet contacts like original. Whereas the Torino or Mustang do fine with 2 incandescent rear bulbs the Cougars with 6 bulbs put too much load on the switch and they fail. The only way these switches will hold up in a Cougar is if you convert to LED. We are hoping the supplier will take our advice and correct this problem but until such time we cannot warranty this product. Don Rush 9-11-2017
1970-72 Drake Turn Signal Switch Brake Circuit Analysis by Vic Varberry
These reproduction turn signal switches seem to work in Mustangs (2 bulbs)
but will not handle the extra current load of the Cougar rear tail lights (6 bulbs).
The Drake switch has about .3 Ω resistance measured from the (green) brake input
pin to either the right (orange/blue) or left (green/orange) rear light pins. The Ford
switch measures less than .1 Ω. The initial resistance of the Drake switch was as high as .9 Ω.
The resistance was reduced by actuation of the switch from left to right turns several times
but stayed around .3 Ω.
The Drake switch was constructed using plated steel rivet contacts where the Ford switch was
made using brass rivet contacts. The plating on the Drake switch lugs is shiny like nickel where
the Ford switch used tin/lead plating.
</strong>Circuit resistance, under a 1 lamp load was calculated to be over .2 Ω - much too high. The Ford
switch was calculated to be .04 Ω.
Need help diagnosing a Cougar turn signal problem? Victor Yarberry is the world’s most knowledgeable expert on the subject. Vic has owned Cougars since the 1970's and is the designer of all of our solid state sequential systems. There is no question he cannot answer! Here is a link to a great source of information on the subject.
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