Im looking for a wiring diagram of the infinity speakers for a 98 and 99 CTD.

I have a 99 with the passenger speaker blown. A buddy gave me his speakers and Head unit from his 98. The h/u is a plug and play but the speakers are not. Everything looks the same except my 99 has 2 extra wires going to the speaker/amp. One is a 12v source that goes on and off with the head unit. All colors match except these two wires.

 

The two outside wires are the amp power wires. The two inside are the sound wires. If the new speaker has no amp just hook up the two inside wires.
Tom

 

The 98 and the 99 both are identical and have amps on the speakers except the extra 2 wires on the 99. The 98 has 6 wires and the 99 have 8. I just need to know what the 2 extra wires are for where the 98 speakers did not use them.