I have the three wire kit hooked up through my 2019 F-250's up-fitter switches which are fused switches up by the rear view mirror. I have the battery wire hooked to a switch that when in the on position supplies constant battery voltage. I have the ACC wire hooked up to another switch that when in the on position supplies accessory voltage only when the truck is running. I did all this so I could easily turn off recording and parking mode separately with the up-fitter switches. I tested these connections with a voltmeter before hooking up the three wire kit.
My idea was if I left the battery up-fitter switch in the off position I could use the dashcam without the parking mode. I'm seeing that the battery switch must always be on or the dashcam won't work. This tells me that the three wire kit won't pass any voltage through the cable if it sees no battery voltage even though there is accessory voltage. Does that sound right or do I have a bad three wire kit?
My idea was if I left the battery up-fitter switch in the off position I could use the dashcam without the parking mode. I'm seeing that the battery switch must always be on or the dashcam won't work. This tells me that the three wire kit won't pass any voltage through the cable if it sees no battery voltage even though there is accessory voltage. Does that sound right or do I have a bad three wire kit?