Just thought I'd add a note here.
This pickup continues to run with no further module failures after the relay was wired into the system. Obviously one can wire HEI without the use of a relay and the truck will start and run. However, without a relay I place the module will live a short life. So the use of a relay in Dans instructions isn't a suggestion but a mandatory step a successful conversion.
In my initial conversion I actually had a relay to wire into the system but it was the wrong one. Living 35 miles from the auto parts store; I just wired it without one. Until I'd blown a few modules and went back to Dans drawing; I'd forgotten about the relay.
