Metra 70-7901 Receiver Wiring Harness

I found that information by searching "Miata Z-74 Audio System wiring" on google and than click on images.

Copy and past the below text into notepad than resize the window until the lines align. 1 . M I A T A 2 H E A D R E S T S P E A K E R 3 P A R A L L E L AND S E R I E S 4 W I R I N G 5 6 =============================================================== 7 P A R A L L E L W I R E D 8 H E A D R E S T S P E A K E R S 9 10 PASSENGER SEAT SPEAKERS DRIVER SEAT SPEAKERS 11 (+)R(-) (+)L(-) (+)R(-) (+)L(-) 12 o o o o o o o o 13 | | | | | | | | 14 | | | | | | | | 15 | | | | | | | | 16 | | | | | | | | 17 | |_ | | | | _| | 18 | | | |_____________________|___|_____|_ | 19 | | |_________________________|___|_ | | | 20 | | | | | | | | 21 | _|_______________________________| | | | | | 22 | | | _______________________________| | | | | 23 | | | | | | | | 24 \ / \ / \ / \ / 25 ___o_____o_____________________________________o_____o___ 26 | (+) R (-) (+) L (-) | 27 | | 28 | Head Unit | 29 | Headrest Speaker Outputs | 30 |_________________________________________________________| 31 32 33 =============================================================== 34 S E R I E S W I R E D 35 H E A D R E S T S P E A K E R S 36 37 PASSENGER SEAT SPEAKERS DRIVER SEAT SPEAKERS 38 (+)R(-) (+)L(-) (+)R(-) (+)L(-) 39 o o o o o o o o 40 | | | | | | | | 41 | | | | | | | | 42 | | | | | | | | 43 | | | | | | | | 44 | | | | | | | | 45 | | | |_____________________|___|___ | | 46 | | |_________________________|___|_ | | | 47 | | | | | | | | 48 | | _____________________________| | | | | | 49 | | | _______________________________| | | | | 50 | \ / | | \ / | 51 \ x / \ x / 52 ___o_____o_____________________________________o_____o___ 53 | (+) R (-) (+) L (-) | 54 | | 55 | Head Unit | 56 | Headrest Speaker Outputs | 58 61 LEGEND: 62 L = Left 63 R = Right 64 o = Connection Point 65 (+) = Positive Terminal 66 (-) = Negative Terminal 67 x = Wire Splice (suggested point for ease of installation and,