the12volt.com spacer
the12volt.com spacer
the12volt.com spacer
the12volt.com spacer
icon

Astra skytek alarm


Post ReplyPost New Topic
< Prev Topic Next Topic >
1978malibu 
Member - Posts: 23
Member spacespace
Joined: January 09, 2015
Posted: July 28, 2015 at 11:46 PM / IP Logged Link to Post Post Reply Quote 1978malibu
I'm trying a new company out has anyone ever tried astra 777-c before?. I read the instructions a little confused it doesn't show that I can add a starter kill. Is this an ok alarm. Thks
kreg357 
Platinum - Posts: 7,781
Platinum spaceThis member has made a donation to the12volt.com. Click here for more info.spaceThis member has been recognized as an authority in Electrical Theory. Click here for more info.spaceThis member has been recognized as an authority in Mobile Security and Convenience. Click here for more info.spacespace
Joined: January 30, 2009
Location: Pennsylvania, United States
Posted: July 29, 2015 at 6:07 AM / IP Logged Link to Post Post Reply Quote kreg357

I am not a ASTRA or SkyTek user so I can't comment on the quality or reliability of these units.  The install guide is rather brief.  While

it doesn't show a Starter Kill circuit here is one way to do it.

You will need an external 30/40 Amp relay.  Hopefully the car in question is a typical vehicle with a dedicated STARTER wire and

Ignition wire easily found at the ignition switch harness.  Locate this STARTER wire and make a cut at a convenient location.
Relay Pin 87a to one side of the cut vehicle STARTER wire
Relay Pin 30 to the other side of the cut vehicle STARTER wire
Relay Pin 85 to Astra 777-c Orange (-) 500 mA Armed Output
Relay Pin 86 to vehicle (+) Ignition1 wire ( same wire that goes to Astra 777-c Yellow (+) Ignition In 12V )

Circuit operation :

When the Astra 777-c is not armed, the relay is de-energized and just passes the STARTER signal through.  Normal vehicle
operation.
When the Astra 777-c is armed, it is constantly outputting the Orange (-) 500 mA Armed Output signal, however this has no affect
on the relay ( saving battery power ) until the Ignition input on Pin 86 goes to +12V.  This happens when the ignition key is turned
to ON.  At this point the relay is energized and opens the Pin 87a to 30 connection.  When the key is turned to START, Ignition stays
at +12V and with the relay still energized prevents the START signal from reaching the vehicles start circuits ( starter motor ) and
cranking the engine.

Additional concerns :

Cutting the STARTER wire to add the relay could cause issues if the connections are not properly made.  The relay should have a
quality 5 Pin harness and the Starter wire connections should be soldered and insulated with heat shrink tubing.
When the Astra is armed and the Starter Kill is in effect, it is possible that the key will be repeated and rapidly turned to START in
an attempt to get the engine cranking.  This will cause the relay coil to generate a strong pulse when the field collapses that could
damage the Astra 777-c.  A relay coil quenching diode is needed.  Obtain a 1N4007 diode and solder it to the Pin 85 and Pin 86
leads with the band towards Pin 86.

Soldering is fun!
howie ll 
Pot Metal - Posts: 16,466
Pot Metal spacespace
Joined: January 09, 2007
Location: United Kingdom
Posted: July 29, 2015 at 6:40 AM / IP Logged Link to Post Post Reply Quote howie ll
Kreg, 10/10 young man. 1N4004 is the most commonly available and is adequate.
I believe Skytek was started by the guy from Clifford who did the Wiz software, still the best in the industry IMO.
Trouble is I've heard stories of poor manufacture/quality control over the years.
OP, the instructions are written for pros, not the public and like DEI and Compustar assume you know what you're doing. If you don't know about starter cuts you shouldn't be doing this.
1978malibu 
Member - Posts: 23
Member spacespace
Joined: January 09, 2015
Posted: July 29, 2015 at 7:51 AM / IP Logged Link to Post Post Reply Quote 1978malibu
I know about the Orange wire. And how to connect a relay but if doesn't show it on the instructions ididnt want to destroy the unit.
1978malibu 
Member - Posts: 23
Member spacespace
Joined: January 09, 2015
Posted: July 29, 2015 at 7:53 AM / IP Logged Link to Post Post Reply Quote 1978malibu
What do you guys think about uni 335
howie ll 
Pot Metal - Posts: 16,466
Pot Metal spacespace
Joined: January 09, 2007
Location: United Kingdom
Posted: July 29, 2015 at 8:56 AM / IP Logged Link to Post Post Reply Quote howie ll
I've never heard of it, took a look at a fleabay advert for it, if you're a pro don't touch it if you're an amateur good luck!
It's a Chinese cheap end Compustar clone, go to AliBaba and you'll find literally 1000's of them. All rubbish.

If you wish to post a reply to this topic, you must first login.
If you are not already registered, you must first register.

  Printable version Printable version Post ReplyPost New Topic
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot delete your posts in this forum
You cannot edit your posts in this forum
You cannot create polls in this forum
You cannot vote in polls in this forum

  •  
Search the12volt.com
Follow the12volt.com Follow the12volt.com on Facebook
Thursday, March 28, 2024 • Copyright © 1999-2024 the12volt.com, All Rights Reserved Privacy Policy & Use of Cookies
Disclaimer: *All information on this site ( the12volt.com ) is provided "as is" without any warranty of any kind, either expressed or implied, including but not limited to fitness for a particular use. Any user assumes the entire risk as to the accuracy and use of this information. Please verify all wire colors and diagrams before applying any information.

Secured by Sectigo
the12volt.com spacer
the12volt.com spacer
the12volt.com spacer
Support the12volt.com
Top
the12volt.com spacer
the12volt.com spacer