Spark plug cap replacement

[johnmc]

Hi everyone.
I want to replace the old spark plug cap that are 41 years old but are having troubles trying to find an equivalent one . I can't see or tell if there is a resistor inside . Any help would be greatly appreciated.
John Sydney Australia

[johnmc]

Sorry they are on my gsx 400 f 1981

[tom203]

Stock caps came with a resistor ….get new NGK ones with 5 kohm internal resistor ….widely available

[johnmc]

Thanks Tom203 much appreciated .

[Redman]

Hi everyone.
I want to replace the old spark plug cap that are 41 years old but are having troubles trying to find an equivalent one . I can't see or tell if there is a resistor inside . Any help would be greatly appreciated.
John Sydney Australia

Yes, stock original caps have resisitor (5k), and original plugs did not.
Get resisitor caps if your plugs do not have resistor.

If you cant find non-resistor plugs and have to get resistor plugs, then also get non-resistor caps.

.

[Gorminrider]

yes as Tom 203 says NGK... They come in a variety of lengths and angles too so download the catalogue and match them to yours-They can vary (in pairs) on four cylinder bikes