testing parts, is there a good way and bad?, want to test stuff before installing, but no power yet Options

[Gigamight]

I want to test some things like headlight motors, fresh air box, etc. before I install them. Especially the fresh air system, since it is such a pain to put together. Can I safely test them on a bench with a 12 volt power source? If so, where can I find some pinouts for correct connections?

[tradisrad]

When I checked out my roller's wiring i just put the battery in and checked the lights, blower and anything else that could be powered up.

haynes manual should have the wiring diagram for the fresh air blower etc. besure to oil the bearing.

also with the the fresh air box, if you dont have the screen add one. I went as far as adding some black screen (door) mesh over the factory leaf screen. if you have an early car you can get a late gasket and fit the factory screen. and make sure you get a good seal as it's a great place for water to enter. don't forget to check the blower switch plate; they often are filthy.