I find they operate just fine when simplified in some cases. Just use the governor and wire it through either a manual switch or one under pedal or micro on throttle linkage for auto pass gear. Use a bosch 5 pin standard 30a relay to throw the solenoid. I love mine. I have a manual pass gear on mine but with the v8 i never have to really use it. It auto downshifts from governor under like 25mph anyways.
