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El Duderino
Join Date: Feb 2011
Location: The Forgotten Coast
Posts: 5,843
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Gerry,
Thanks for posting that. I think that’s specific to the ‘84-‘89 Carreras with DME?
Since the SC’s don’t have a DME, I don’t believe there is an analogous jumper required so would like to confirm.
In the diagram I posted, there is a constant hot (pin 30) that comes from the battery. The alarm would need that to provide power to the horn. That makes sense. I don’t understand why there is a switched power from the ignition switch (pin 15). I can’t decipher the purpose.
Also, I thought in other posts that pins 61 and 61 need to be jumped to complete the circuit from the alternator to charging light? I thought the charging light is required for the battery to charge. I don’t really understand what this is part of the alarm. I guess the theory is that if the alarm is activated it prevents the battery from charging. So I think this needs to be there. When I start the car with 61/61 jumped the charging light is on and with the key in ON position and goes out once the car is started as it should. Now that I think about it, I did not try starting the car with 61/61 jumpered.
It’s a PITA to get to the alarm module so I’d appreciate it if anyone can confirm that only jumping 61/61 is required on an SC before I put all the fresh air blower crap back in place. Really don’t want to have to do it again anytime soon!
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There are those who call me... Tim
'83 911 SC 3.0 coupe (NA)
You can't buy happiness, but you can buy car parts which is kind of the same thing.
Last edited by tirwin; 09-08-2019 at 07:29 AM..
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