Did the original tach come to Shelby with molded on male plugs to plug into the female loom leads? If not, did Shelby solder on or crimp on male connectors?
Plugs on both of the hook up wires as shown in the picture and on original examples. No solder, quick connects, crimping or electrical tape
Was the dash pad removed during the process of installing the tach? If not how did the spacers get placed in to prevent crush of the dash pad on installation of the screws?
No don't see any indication that they spent the effort doing that when it would add more steps and work to the process of installing the tach. Spacers can be inserted without allot of effort in the larger diameter holes in the dash pad than in the pilot hoses for the mounting hardware
Regarding spacers, when I removed my dash pad it had lug nuts used as spacers. Has anyone else had lug nuts used as spacers? I can see Shelby doing that.
Never seen or heard of anyone else finding that. If Shelby did do it (which I don't believe they would) there would be a whole group of cars done the same way. Would have needed a pretty large diameter hole in the dash pad plus would worry that the hole would be exposed somewhere around the tack mounting bracket