Pos/ neg do not matter "it's a switch" What year is your Duster?
Find the starter relay on the car, either on the firewall or fender apron
LOL here's a photo I found already marked.........the arrows point out the points at which you attach the switch
View attachment 1715754923
To set timing/ distributor, pull no1 plug and bump engine until you start to feel compression. Now watch the timing marks and bump or wrench the engine until the marks come up NOT to TDC but rather to "where you want" timing set. With a stock cam this might be 5-10BTC, with a mild cam 10-15 or maybe more BTC
So far as running and not appearance correct it really does not matter wich way the dist is inserted so long as you get the no1 wire in place to match the rotor position Rotor should be "just coming to" the no1 tower. Make sure the dist has enough "switng" room to adjust timing.
Now rotate dist CW (retard) and back slowly CCW (advanced) until points just open or if electronic, so that reluctor tip is in the middle of the pickup coil. You can check timing "on the starter" but with this method it should start and run "no fuss"
