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I've never seen a working factory alarm system on a C3, and my '76 is no exception. However, after my brother had his daily driver (not a Corvette) stolen, it made me want to protect my Vette a little more.
Many other Vette owners I've talked to said that restoring the alarm system isn't really worth it (unless you're a purest, which I'm not.) My thought was to turn the key switch that should be used to arm the alarm into a kill switch by wiring it into the coil.
My question to the forum is can it be done? I don' t know how I can find the electrical specs on the switch and if it can handle the current offered by the BATT wire on the coil. I've also thought of using a relay idea as well to eliminate most of the current from going through the switch.
If anyone has thought of, heard of, or tried this idea let me know.
Thanks as always.
Dave K.
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Send PMIrving, TX - USA
Joined: 8/21/2004
Posts: 4286
Vette(s): #1 -1969 Corvette Coupe Riverside Gold, black interior,MN,A/C,350/350,PS,PB,window cranks.
#2 -2000 C5, black/black, 6 sp, Bose system & lots of buttons.
It doesn't matter what kind of alarm system you have on it. If they want it, they will take it because they are professional car "booglers." Now, if you had a LoJack on it the police can track your car, you get it back and the chop shop gets busted. 
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MICK - C3VR Lifetime Member #113
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Duncanville, TX - USA
Joined: 11/8/2003
Posts: 22720
Vette(s): #1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/
Am-Fm/map light National/Regional/Chapter NCRS "Top Flight"
#2-1985 Bright Red/Carmine Cp.L-98/auto
Member: NCRS, NCRS Texas, Corvette Legends of Texas
Mine werks, if ya wanna come down here and check it out!
The switch in the fender would work for a kill switch, but...they pop out pretty easily, and most scumbag thieves will pop that first anyway.
A kill switch can be put just about anywhere, but, with an HEI ign., all you need is one jumper wire, and it's running.
The best deterent to a wanna-be thief/joyridin punk is a visable steering wheel/brake/shifter lock. Those take time to get off, and thieves don't like hangin around for too long.
The steering wheel locks I have go around/thru the steering wheel, and around the brake pedal. Granted, you can saw thru the steering wheel, and get the thing off, but, how long would it take? Plus, on my '74, or the '85, with the wheel tilted all the way down, it's almost impossible to get in there to saw it anyway. Most thieves are gonna look for cars that are the easiest to get, unless they are in the "Gone in 60 Seconds" game. Those people don't care what it takes...if they want it, they're gonna get it.
Ask Anthony(ten15)...he's a auto theft recovery officer. He'll know the best way to keep your 'Vette YOURS.
The switch in the fender would work for a kill switch, but...they pop out pretty easily, and most scumbag thieves will pop that first anyway.
A kill switch can be put just about anywhere, but, with an HEI ign., all you need is one jumper wire, and it's running.
The best deterent to a wanna-be thief/joyridin punk is a visable steering wheel/brake/shifter lock. Those take time to get off, and thieves don't like hangin around for too long.
The steering wheel locks I have go around/thru the steering wheel, and around the brake pedal. Granted, you can saw thru the steering wheel, and get the thing off, but, how long would it take? Plus, on my '74, or the '85, with the wheel tilted all the way down, it's almost impossible to get in there to saw it anyway. Most thieves are gonna look for cars that are the easiest to get, unless they are in the "Gone in 60 Seconds" game. Those people don't care what it takes...if they want it, they're gonna get it.
Ask Anthony(ten15)...he's a auto theft recovery officer. He'll know the best way to keep your 'Vette YOURS.
Joel Adams
C3VR Lifetime Member #56 
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(click for Texas-sized view!) NCRS
"Money can't buy happiness -- but somehow it's more comforting to cry in a CORVETTE than in a Kia"
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Mine works too but only a horn sound when the hood, doors get jarred. Take Joel's advise with the steering wheel lock.. If they want it they will haul it off..
O'look Joel has a new signature picture
...Nice
O'look Joel has a new signature picture...Nice
"I Love all Corvettes! LifeTime Member #60..Terry" 
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Yeah, I know nothing is a guarantee. I was looking for a deterrent. I do have a Club for the steering wheel which I use, but I wanted additional security. Disabling the engine is the best I could think of. If it had a seperate coil instead of an HEI, I would just take the coil wire off when it is parked.
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Pulling the power wire is too easy. A decent crook will spot it in a second. You can splice into the tach wire under the dash where it cannot be seen, and add a switch to ground the tach wire. When grounded it won't start. and it's not easily seen.
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in Forum: C3 Electrical, Body and Interior
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