Ive just started to replace my wiring on the 1JZ. I've just noticed that on the old wiring the Diagnostics is a big black unit, and on the new one Im putting on, its a little grey unit. I havent looked closely enough to find any other differnces (wiring gives me a headache just by looking at it). Will I have any problems at all?
Also, both of the diagnostics holes are filled up with this weird junk....is this normal ??