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Re: How To Do the Bosch Relay Mod???
In order to arrange an interlock, the cruise control circuit is grounded via the starter solenoid. When a relay is fitted this ground is via the relay. If the relay is of a sensitive type, with a relatively high resistance coil, the ground path provided is of much greater resistance than that originally provided by the solenoid and is therefore not effective.
It has been found that the specified Bosch relay, which is more akin to a contactor than a relay, has a coil with a low enough resistance to provide the required ground circuit. There should be no difference in respect of manual or auto transmissions regarding this situation.
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Trevor, New Zealand.
As a child, on cold mornings I gladly stood in cowpats to warm my bare feet, but I detest bull$hit! 
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