Hay guys, :oI think the reason for meter dip when signaling is because of the type of relay used, it uses a capicator, the capicator has to charge up in order to fire the relay to flash the bulb, so as the capicator charges, that makes the needle drop. Thats why an electronic flasher does not make the meter dip, because it does not use a capicator.
I also used led lights in all six rear lights, it was a pain to figure out, expensive and probably not worth all the effort. :-/