Thanks for the opportunity to post ideas !
1) I haven't kept up on some of the newer convenience control systems on the newer cars - but how about retro fitting some of the battery saving techniques or circuits into the Highway line ?
Thinking about some of the things on my new cars that have saved my butt a few times - like:
Auto courtesy lights timer relays that shut off the underhood, interior, trunk lights and radio after x minutes of key off. Maybe the same for parking and headlights.
Key in ignition door lock inhibit.
Key in door lock - turn to lock position and relays lock all the doors/trunk and close all the windows.
I don't know how that stuff is wired in new vehicles - if they are computer controlled/actuated or hardwired with relays old school, etc - but add on kits to compliment your current product line that would make it easy to add some of these concepts to older cars/trucks.
2) Sparky talked about bulkhead connectors in several different geometric configs (round, square, oblong) that would fit into tight locations making it easier to hide wiring. (something very popular with the Rod set) The only one's we found were aircraft types that also come at a price for a fully mil-spec'd component - and that requires special tooling and crimpers. We'd need something more automotive friendly that uses weather pack type tooling. A couple should be high-density for under-dash to engine for the clean firewall look. Etc.
3) One stop shopping for wiring protection like what we see on aircraft and F1/Indy/IMSA style cars - just not at Mil-spec costs. All that stuff is available via specialty vendors or OEM folks and aircraft/military sources. Again, something designed for Rod/PT/L-G style cars for the systems, temps and environments common for this group.
Just thinking out loud and with little research into what's available out there already. Talk is cheap .....
Jim