- Yep, the schematic shows one. I'm not sure offhand where it is located, but I imagine it's on the reverse relay or on a small card nearby. Also the E12S, E15 manual (Elec-Trak.Org) has reverse relay troubleshooting and a service bulletin at the very end. > > There might be a varistor that goes across the relay to absorb the > sparks, or a capacitor. If so I'd bet it's blown. >