C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

installing aftermarket alarm

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Old 11-29-2012, 07:33 PM
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locknessmonster
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Hey guys, just wondering if anyone on here has ever put an aftermarket alarm(with remote door locks) onto their c4, in particular an 84. Is this something I can do or should I be bringing this to a shop? thanks for any help!
Old 11-29-2012, 08:31 PM
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leesvet
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You don;t have the VATS so its not a huge deal..DO make sure whatever you buy, will be compatable with the GM system..if you have one. I forget what exactly was installed in 84...VATS did not come around until 86 IIRC..
I've seen keyless entry, remote start, all the toys.
Old 11-30-2012, 11:46 AM
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DanZ51
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I have done a couple of car alarms way back when, never on a Corvette though. They can be a PITA to install, and if something goes wrong the alarm "engine cut off" down the road. If you have patience, a wire diagram, and take your time you can do the install yourself and you'll end with a MUCH better install than any of the shoddy work I've seen from Alarm/Stereo shops. There are A LOT of wires in a C4, and the interior trim pieces are old (brittle) so great care must be taken.

Ask yourself: do you really need an alarm system?
Then ask: do I really want somebody working on my Vette?

Last edited by DanZ51; 11-30-2012 at 11:50 AM.
Old 11-30-2012, 11:54 AM
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locknessmonster
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Originally Posted by DanZ51
I have done a couple of car alarms way back when, never on a Corvette though. They can be a PITA to install, and if something goes wrong the alarm "engine cut off" down the road. If you have patience, a wire diagram, and take your time you can do the install yourself and you'll end with a MUCH better install than any of the shoddy work I've seen from Alarm/Stereo shops. There are A LOT of wires in a C4, and the interior trim pieces are old (brittle) so great care must be taken.

Ask yourself: do you really need an alarm system?
Then ask: do I really want somebody working on my Vette?
Lol... I think you just changed my mind for me. I have had an alarm just sitting in my house unopened for years. But now that you mention it... no... I don't really need an alarm at all, just kind of wanted it for the remote door locks. Thanks for talking the sense into me!
Old 11-30-2012, 01:02 PM
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ccrazor
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Here is the theft deterrent for the 84..




Old 12-19-2012, 02:50 PM
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Jim Rogers
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Originally Posted by ccrazor
Here is the theft deterrent for the 84..

Any opinion on the effectiveness of this factory system?
Old 12-19-2012, 03:20 PM
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slickfx3
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factory good, i use the horn on my aftermarket, no siren so an intrusion sounds the same. I had a shop install it years ago and the brittle plastic broke everywhere< i got over the pain, it didn't help those aholes didn't give a $hit.

VAT can be problematic, buy a defeat bypass or reburn the prom chip

aftermarket will give you keyless entry and hatch release, engine off door unlocking, flashing light ( this is a good one) and shock sensor and of course the siren if you prefer.

as far a piece of mind, the stock one will do the trick, but the aforementioned features will modernize the old vette

I use a club the flashing light I broke dicking with the interior work one day.
Old 12-19-2012, 04:09 PM
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markKlein
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You have a factory alarm system, I don't think 84 had an anti-theft system though.

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