black wired probe harman esp

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    P38+ upgrade circuit board

    Have not seen this posted ever so here goes. The old pp38 with the 2 knob control board had the black wired ESP PROBE. When the upgrade circuit board # 1 - 00-7738111 is installed, what color of ESP probe will be Used? The original black,or the red wired Probe? When the board is received from...