I have searched around....

Does anyone know why Bosch Fuel Injectors are marked with a small + to show the positive side.

Does it matter?

If it does how would I check all is in order as I seem to have a DIY loom on my M119 engine. (500E)

Engine Management is LH 5.01.

Searching around I only found one clear statement and it said that as it's only simply coil polarity does not make any significant difference.

Jim.