Lights "kill" engine???

[Nomad]

I had my lights running off the white wire and all was well, but recently when I connect the lights while the eng is running it kills the eng immediately. I don't have a "switch" for the lights just a "plug in" when needed. I checked the wires and the bulbs all is ok... this is puzzling, anyone have any input as to what the problem could be?....
thanks.
Bob

[jburr36]

How's the spark plug look?

[jburr36]

Maybe the light's resistance is changing with the temperature?

[jburr36]

Perhaps some moisture or dirt causing a short in the plug?

[Nomad]

Last time I looked it was a nice dark chocolate brown, the engine runs ok otherwise, it does seem to "miss" when I crack the throttle but it's always done that and I think that's because of the crappy mufflers the kits come with..

[Nomad]

I'll check the plug soon as she cools off... thanks for the advice.....

[FileStyle]

try the sparkplug wire! replace with a new 7mm wire. you can get a single wire from your favorite auto parts store. mine would do that also , I would have my bike warmed up good and as soon as I would try the light it instantly killed the motor. I replaced the wire and taa daa it works now.

[Nomad]

Plug looks good, I did replace the original plug wire when I built the bike.. But I'll take your advice Filestyle1 and replace the plug wire. I bought a plug wire kit for a 4 cyl chevy which gave me 8 plug connectors and lots of wire. The parts that connect to the coils also connect to the plug... 10 bucks, they wanted 8 dollars for one wire and connector....thanks for the tip;..

[Nomad]

New plug wire had no effect, still dies... Maybe I fried the white wire thingy inside, eng runs really good though....

[drhofferber]

is the light 12 or 6 volt...12 will kill the engine...dennis