The Blue & Green relays used in the engine bay fuse box have the same pinout, same coil impedance (about 76 Ohms) and same contact pin configuration (make contact). So; can anyone tell me what the difference is between the 2. Does one have a higher current rating for the contacts? If so, what's what? Thanks
Forgot to add.. I have browsed through the manual; couldn't find any reference that described the difference; and google doesn't seem to know either.
Assumption: may just be helpful to distinguish between circuits. Interestingly the Green ones seem to point to engine running circuits: EGI, Fuel pump, Ign coil
Did some electical comparisons and then disected them to see inside. Both relays have the same pin configuration and numbering Both relays have a coil resistance of ~ 80 Ohms. Pins 1 & 2 Both relays have 1 x Make contact @ pins 3 & 5 Both relays have a internal 1K resistor accross their coils. This changes the operate and release characteristis of the relay. Green relay operates at ~5.0V, Blue relay operates at ~ 6.3V (tends to suggest Blue relay has heavier internal contacts) Green relay releases at ~2.0V, Blue relay releases at ~ 2.6V Upon inspection of the internals, It does look like the Blue relay has bigger contact and would probably handle higher current than the Green relay. In summary: I would suggest that using a Blue relay in place of a Green relay is ok. I do; and the wheels haven't fallen off yet.
