I have a hardwire kit for my dashcam, but I can't get it to plug into any of the available circuits. The only slot that seems to fit is 21 but the fuse won't actually plug into anything, it just sits loosely. I'm not sure where else to put this.

The hardwire kit I have is this: Rexing Mini-USB Hardwire Kit for V1, V1P, V1 3rd Gen Dash Cams https://www.amazon.com/dp/B01LXC2329/ref=cm_sw_r_cp_apa_i_TYxlCbNYJ701H

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1 Answer 1


You need to plug that adaptor fuse into a slot that already has a fuse using a circuit with the functionality you need, ie always on, acc on or ignition on.

That adaptor fuse replaces the existing fuse, so remove the old one and fit the adaptor fuse in its place.

So, 27 theft may be always on

31 may be acc, and

23 ignition

Assuming from the poor text given in the legends - you will need to test...

Edit: Just to show you a diagram for using a relay: enter image description here

  • If I replace an existing fuse, will it disable whatever was already running there? Does the adapter I have just pull extra power from the circuit for the camera, leaving the other stuff untouched?
    – MrDuk
    Jan 3, 2019 at 13:11
  • No, it will not disable the original circuit, it just pulls power for the camera and the other things continue...
    – Solar Mike
    Jan 3, 2019 at 13:13
  • Fuse 24 (Spare) looks to be the optimal fuse to use. The adapter fuse appears to be a 15A ATO fuse. There's only two of them in the fuse panel (22 & 24). If 24 is a spare (as in I don't have a clue why it's there then) and provides power, but as the name implies isn't really used, this would be perfect spot for it as it would not interfere with anything else, as well as it won't overload the circuit. Jan 3, 2019 at 14:50
  • My plug won't fit into anything except the empty #21 and the filled #13 and #14, which are labeled as 2amp. I assume putting a 15amp fuse there wouldn't be safe? #21 is empty
    – MrDuk
    Jan 3, 2019 at 16:36
  • The others that you mentioned are 3 prong outlets.
    – MrDuk
    Jan 3, 2019 at 16:37

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