Time for a long belated update! In the next few days, I will be tinkering with wiring up a set of JDM DC5 power folding mirrors. The idea is to wire it up using the JDM power mirror folding switch while retaining the USDM heated mirror feature. How will this be handled? By installing two additional plugs to accommodate a total of 7 wires per mirror; 3 wires to control the motor movement, 2 wires to control the folding feature, and 2 additional wires to control the heated mirror feature. All this will be done using stock wiring so there is minimal wire slicing and splicing done on the OEM wiring in the event you'd want to revert to stock. We'll be using the USDM OEM heated mirror switch as well. The heated mirror switch will be cut from the OEM switch housing and then epoxied onto the switch panel right next to the JDM folding mirror switch. In theory, this should work. In the event that it doesn't, I will be splitting the install guide into two write-ups: wiring up the JDM DC5 power folding mirror and then hooking up the heated mirror switch. Stay tuned.