i just got in a new PMD for my 96 6.5 and the pmd that i pulled off has a diff plug end end on it then the one i just ordered.. (the new one wount plug into the one i pulled off) so i quess my puestion is could there be a diff wiring for the pmd?

one pmd that i pulled off the truck has a squair plug and the new one the i have takes more of a half moon shaped plug..

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could i ask someone what shape there plug is? the shops around here suck!