You got that right Dave. The problem is the lack of pinpoint tests along with component location and connector locations from the service manuals. These might be included in a different manual but I have not seen them. With a pinpoint test you can go right to a connector or component and quickly narrow down the offending circuit or part. Honda does not do that with any detail. No excuse for that lack of detail, when I worked for Ford in the 80's that info was readily available in their manuals.There is a lot to making reverse work.