1968 Mercury Cougar, Remote Start Wiring

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pvgreen21

Member - Posts: 3

Joined: December 14, 2019

Location: Louisiana, United States

Posted: December 14, 2019 at 3:41 PM / IP Logged

I want to install a compustar remote start alarm on my 1968 Mercury Cougar base model. I can't find an alarm wiring diagram anywhere for this car. Please help

Patrick v. Green

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i am an idiot

Platinum - Posts: 13,667

This member consistently provides reliable information

Joined: September 21, 2006

Location: Louisiana, United States

Posted: December 14, 2019 at 8:44 PM / IP Logged

Do you have a volt meter? There will be less than 5 wires at the ignition switch. First find the constant wire. It will probably be the largest wire. There will be a smaller wire that has power when ignition switch is in the on position and the accessory position (If there is an acc position) This will be the accessory wire. Another large wire will have 12 volts when the key is in the on position and will still have power when the key is turned to the start position. This is the ignition wire. Probably the only remaining wire will be the start wire. It will only have voltage on it when turned to the start position.

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Ween

Platinum - Posts: 1,366

Joined: August 01, 2004

Location: Illinois, United States

Posted: December 15, 2019 at 12:20 PM / IP Logged

Yellow...Battery, Black/Green...Accessory, Red/Green...Ignition, Red/Blue...Start

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mgoetz74

Silver - Posts: 424

Joined: February 15, 2012

Location: United States

Posted: December 16, 2019 at 11:27 AM / IP Logged

ok ill ask...carb or fuel injected?

33 years as a installer now just a retired old guy. Favorite thing to install/topic are remote starts/car alarms. Stop using test lights!!!

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pvgreen21

Member - Posts: 3

Joined: December 14, 2019

Location: Louisiana, United States

Posted: December 20, 2019 at 10:37 PM / IP Logged

Carburetor with electric choke

Patrick v. Green

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pvgreen21

Member - Posts: 3

Joined: December 14, 2019

Location: Louisiana, United States

Posted: December 21, 2019 at 6:29 PM / IP Logged

That model has no tach but the remote start has a tach input. How do I wire that

Patrick v. Green

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Ween

Platinum - Posts: 1,366

Joined: August 01, 2004

Location: Illinois, United States

Posted: December 21, 2019 at 6:59 PM / IP Logged

The ignition coil has a positive (+) terminal as well as a negative (-) terminal. Connect to the negative.

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