I replaced every harness in my 69. Year One sells the M&H harnesses. They however do not offer the passenger side harness for the opera light among others harnesses!
I contacted M&H and then sent my original harness to them and they reproduced it and sent back the original. The rear harness from Year One had the driver side covered.
Any harness they offer that is not listed M&H will make for you. They have part numbers assigned for this as well as the accessory under dash harness they also built for me.
I can look the M&H part numbers up in my car $$$$$$$$ folder if needed!
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