Replacing old Spark Plugs..

[NhudeST]

Im about to replace the old spark plugs on my 04 RR-HSE. Do I have to disconnect the battery before doing so? if so, do I disconnect both positive and negative, or just one, and if so, which one?

 

[joey]

No need to disconnect the battery, just make sure the engine isn't running (sorry couldn't help but add some humor)...

No need to worry about the battery.