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Some questions regarding +12V connection, fuse size, etc. ('14 A6)

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Just a couple of questions on a '14 A6 install (EVO ONE + MyCar smartphone).

The two +12V wires (E3 & D3) are to be connected at the OBD-II harness. Since this is a faily low current application so I'm wondering what the appropriate size fuse should be. Nothing in the quide regarding fuse size. In a few of the low-current EVO-ALL installs they specify a 5A fuse, would that be suitable here too?

On the same topic, I imagine the OBD-II wires would likely be thin-gauge, (EDIT: +12V looks like 18gauge from the guide photo)... It looks like the E3 wire is 14g. Since this is a low-current application, I'd like to step it down to a smaller gauge so it's not such a bulky connection at the OBD-II +12v wire. How small could I adequetly go on that?


One last question: Does the EVO-ONE provide power & ground to the MyCar smartphone addon through the data connector? They have optional power & ground wires for modules that don't provide power... Just want to get an idea before going into the install.
asked Nov 26, 2018 in Audi by Hamid Afridi (370 points)
edited Nov 26, 2018 by Hamid Afridi

1 Answer

+1 vote
Best answer
Yes 5A is enough for this application, vehicle is fused 7.5
answered Nov 26, 2018 by Mathieu Bertrand Collin (51,100 points)
selected Nov 27, 2018 by Hamid Afridi
Wonderful, exactly what I needed. Thanks!