M&H harness??? I have a new one also. I had to pirate a terminal from another old harness to fill the void. You would think they would put everything in that is supposed to be there....
The harness is basically for a 70 Charger, it adapts well for 90% of the 70 Plymouth/Dodge B body applications, odd ball options requiring electrical service have to be added with additional harness supplements, or removed from the existing harness, or fabricated...sure beats the old days when you needed to raid junk yards/parts cars for a hopefully complete harness
The only addition to my M&H harness I had to buy for my 70 Charger application was the Tach harness, other than that pretty much everything had service
FYI: I hope the OP took the time to compare the FSM wiring diagram and existing harness to the new one?, as well as check continuity of each circuit? much easier to troubleshoot the harness out of the car/dash before install... some (very few) have had problems with loose/poor crimped connection, or breaks in circuits
Mike