Fitting a USB fast charge outlet

Fitting a USB fast charge outlet

Postby Bitsamissing on Sat Sep 07, 2019 10:05 am

I bought a dual USB charger with voltmeter on ebay: ... 3259828090? and installed it in the big switch blank in the centre console.

Click to view larger picture

I wanted to be able to use the charger without the ignition on (or switched to accessories) however I didn't want it to be on permanently and risk flattening the battery with it's standby current (about 150 mA if I remember correctly) so I added a switch and a relay to turn it on or off. With the circuit as shown it always comes on when the ignition is on (or switched to accessories), and at any other time if the rocker switch is on. The LED voltmeter serves as a reminder to turn it off when not needed. The relay ensures the current to supply the charger is always supplied from the permanent 12V source so it doesn't add significantly (and possibly blow the fuse) to the current to the cigarette lighter socket, where I sourced the switched 12V supply.

Click to view larger picture

I mostly wrote this up to describe the handy source of unswitched 12V I found. Behind the glove box is a "junction block" with a bunch of connectors and relays. A number of the relay sockets are unused and have an unswitched 12V available on one of the pins (female). I used D411 designated as the rear fog lamp relay and not fitted on my GLX+, however D410 which appears to have no assigned function seems suitable too although I didn't test this one. The unswitched 12V for D411 is protected by fuse 11 (10 A).

This pic shows the junction block, with my lead, the red one coming from the right, plugged into the D411 socket.

Click to view larger picture

The relays that plug into these sockets have what appear to be standard "quick-connect" (spade) lugs for the switch contacts... but... they don't have a small hole in the middle like standard QCs have... and if you plug a standard QC into the socket it doesn't make a good contact... because of the hole. I made my own "QC" male connector out of brass plate. It sits quite firmly in the socket.
MQ Club Cab Ute
User avatar
Posts: 166
Joined: Tue Dec 12, 2017 6:15 pm
Location: Melbourne


Re: Fitting a USB fast charge outlet

Postby NowForThe5th on Sat Sep 07, 2019 12:46 pm

Nice write up, Chris.

It's stuff like this that sets us apart and makes this forum such a valuable resource. ;)

If work is so terrific, why do they have to pay us to do it?
User avatar
Posts: 8699
Joined: Sun Jun 15, 2008 2:00 pm
Location: Holt, ACT

Return to Electrical

Who is online

Users browsing this forum: No registered users and 0 guests