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