kill switch

[jocko]

I've read many of the archived threads on this - but still have one question that I can't seem to find an answer to. Some folks swear by using a relay, and some swear by NOT using a relay. I've done these in the past on other vehicles I've had, and normally just interrupted the coil negative connection with a kill switch hidden somewhere. That circuit isn't a high load (right?) like the pos side of the coil - so I'm not sure why folks might think a relay is necessary. But I'm no electrician.... Just curious if you all may have some thoughts. (I had an 57 once that I hooked a kill switch on the ignition side of the ballast resistor - it worked awesome in that the car would start then die in about 2 seconds....) Anyway - just curious what you all might have to say on the subj.

I do like all the interesting ideas I've seen on the archived threads - using the cig lighter, etc. I did see one that was hooked to a switch in the choke - but I'd be worried some knucklehead trying to steal the truck would actually see and USE the choke - i.e. either discovering it's not a real choke - or breaking my fancy switch! Cargo light another great option. Anywho, many options - and realize folks may not want to publish their trade secrets for kill switches(!) so my question is generic - any reason whatsoever to use a relay when interrupting the negative side of the coil circuit?
Thanks folks,
Jocko

[lakeroadster]

I guess the question is what will you use the "kill switch" for?

If it is an anti-theft device why not simply use a Moroso style switch? I have these on my (2) old Ford Hot Rods. Basically it is between the battery and the fuse box. Mine are simple on off switches that are high amp rated. It works great to isolate the entire system. They make these that are keyed.

If you want a real kill switch, how is that different than the keyed ignition switch?

I guess maybe I am missing something here. Not trying to be a smart arse, just trying to help.

[1Bad62Pro/Street]

When I hear Kill Switch I think of Battery Kill Switch like in Drag Racing.
Or Battery Disconnect Switch.
Is this what you are saying Bud?



http://www.moroso.com/catalog/images/74102_inst.pdf


http://www.jegs.com/i/Painless+Perfo...30206/10002/-1

http://www.jegs.com/webapp/wcs/store...itemPerPage=90

[jocko]

(Heater 63, you're correct) i'm just talking about simple, homemade, theft deterrent. I already have a batt kill switch in the engine compartment, so not looking to add an additional race car type elec disconnect switch.

was only asking about the common ignition kill switches folks tend to install (in the interior/under the dash somewhere) that will slow down someone trying to steal the car. I realize someone can jump under the hood and start it, or manually wire under the dash, etc - but they are usually in a hurry and slowing them down is all I'm looking at doing. Have a toggle switch for this purpose - something to flick in the interior when I leave it parked for an extended period outside its comfy, airtight, alarmed, guard-dogged, garage.

(Yes, that's my guard dog avatar.... but he's mean as snot when on duty in the garage )

[Heater63]

I am reading this as an anti-theft switch, something hidden or
camoflauged that disables the starting system.
Keep it cheap and simple, because theives are just going to drag it away if they really really want it. (Our worst fear)