ac amplifier

Hey all, just finishing up an ac install in a fj73 that is now a hzj73. All the ac parts are from a hzj79, and I just need to know what wires/ parts to cut/adapt to get rid of the idle up function and rpm functions as it was petrol and gas swapped to diesel so the tacho doesn’t work anymore...

I’m looking for a replacement AC Amplifier board. I have one that isn’t working. I think two of the capacitors are blow on it. Thought I would ask if anyone knows where I can find one or if there’s a different part to find before I get the soldering iron out.

If anyone has a spare/unwanted 88650-60B80 AMPLIFIER ASSY(new or used), it's the last part that I've been trying to track down for a NAV/Delete. I have a 06 with a build date of 09/2005 that is begging for it.