In Reply to: Plug wire tube posted by Brett (NY) on December 13, 2018 at 09:22:40:
The old saying, 'a picture is worth a thousand words' always applies so if you can post some. I'm spitballin' here, but I don't see any 5-Hole conduits in the MPC's. Perhaps Scott Deppen could add more if there is evidence of such a part. I'd surmise you have an aftermarket type or someone farmerized an original. There was the 9N loom, then the shorter 2N loom used only on the wartime models with the magneto, and then the 8N type. The 8N used a shorter loom. The 9N/2N and 8N only have four ports for the sparkplug wires. Note the 2N-12281-A conduit used with the magneto has only three ports and the #4 spark plug wire exits from the rear of the loom.
FORD N-SERIES TRACTOR WIRE LOOMS; 8N (TOP), 9N/2N (BOTTOM):
MY 1939 FORD 9N WIRE LOOM:
2N WARHORSE CONDUIT (photos courtesy of Chris Eby):