I’m a tech, do these couple times a week. The wiring to the resistor needs to be checked first and see if there is discoloration on the wiring. If so it gets the long harness and resistor. If none it gets the short harness only. Both have a redesigned connector. Difference is short is just basically a new connector, the long one is a better fix as the ground gets hooked to a point under the carpet and the power wire is inserted into the plug on the back of the fuse box where the original one is removed from. The long harness imo is a better fix.
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