Re: Delco rotor button with resistor

Posted by Ross On 2015/11/12 14:55:16

I measured a whole handful and they were anywhere from 9-25000 ohms. I am also not fond of those rotors as the resistor has a habit of falling out. A rotor from a 56 Pontiac has the same dimensions, but no resistor. That is what I use in all my own and customer's cars. The Napa number, sorry its no use to you, is RR157.