15HP MERCURY TACH HELP
AT WITS END. Have a Merc control with the adapter cable for accessories. This has GRAY, BLK, VIOLET, LT TAN, and BROWN/WHITE STRIPE. MY TACH HAS BATTERY(+), COMMON (-) and SEND. NEED HELP ON WHAT COLORS GO WHERE. TRIED GRAY TO SEND, VIOLET TO BATTERY ( I GET SWITCHED 12...