Got a replacement amp due to water damage, the 2 live Y/RD wires had broken away. Came with pigtails, as I was beginning to start splicing I noticed that the 'new' plug didn't have a blue/green wire at pin 2 as mines did (nor there was a pin inside the plug). Have noticed a few pics online and see that appears normal. All other wires in both plugs are as should be, notice on the wiring diagram there nothing at pin 2?
Is the differences in model/year looms that this is the case?


Amp plug B original on left