Hi,

I am goin to install my Commando alarm system to my 1990 Honda Civic.
I am ready to install it except I read that it may or may not require a starter disable relay.

But in my manual it says the relay is optional.

Do I need it?

Thanks,
Owen

I would need more information and greater detail to say for sure, but "optional" generally means you don't need it per se, but it's good to have.