Ford Focus (UK) and Opus

**stevieg** · 04-16-2004, 04:33 PM

Hello,

I'm just about to install my Opus into my Ford Focus but after studying the wiring diagrams (Ford TIS) I can't for the life of me work out where to feed the power from - Had anyone done this in a Focus and can offer some advice on where to get at least the ignition power from?

Thanks

Steve

**god_of_cpu** · 04-16-2004, 04:42 PM

The yellow cable in the ignition switch harness is the ACC line that you can tap into. There should also be a line going to the radio, probably yellow, thats also ACC.

**stevieg** · 04-16-2004, 06:24 PM

Does it matter about current draw through the ignition, am I right in thinking it doesn't draw anything?

I have a harness going up towards the ignition with many cables in it, one is yellow. Is there an easy way to test this? My car is under Ford warranty so I have to be careful and not cut anything!

**god_of_cpu** · 04-17-2004, 07:23 PM

YOu can test any cable with just a voltmeter that you can pick up at radio shack. If it reads 12v when the car is on and off at all other times, then its the ACC line, just splice into it. Current draw for the ACC line on the opus is something like 10 ma or something real small, so no it doesn't matter.

**Enforcer** · 04-17-2004, 07:33 PM

in the UK that would be Maplins or RS components.

Radio Shack AKA Tandy no longer exists is this country.

**tom2112** · 04-18-2004, 09:46 AM

OK, I'm wiring up my Opus 90watt, and I'm pretty clueless about this too. Let me see if I understand this:

The red wire is pulling the main power straight from the battery.
The black wire is going to ground.
The yellow wire is drawing a small amount of current from the accessory line.

If I don't connect the yellow wire, I won't get any power out of the Opus because it will think the car is not running, right?

So if I was using those fuse box taps, I would want to tap the red wire into a constant-on power (I can't think of anything that would be a good example), and the yellow wire into a ACC powered device (like the cigarette lighter). And I can hook the black wire to just about any bolt/screw that goes into the chassis.

Is that right?

Also, what size fuse should I use on the yellow ACC line? (for a 90 watt Opus)

Thanks in advance. I know this should be easy, I just don't want to fry anything by being stupid or assuming things.

**Enforcer** · 04-18-2004, 10:05 AM

sounds about right, but check that the Cig lighter only runs when the ignition is on, some are powered all the time.

**stevieg** · 04-18-2004, 10:06 AM

Got it in working, found a suitable cable and now have the Opus alive and well!

Thanks for you help!

**walk0080** · 05-19-2004, 10:27 AM

I know stevieg got his working but... I can attest to the fact that some Foci have 12V access all the time through the power point/cig. At least my Canadian version 2000 Focus ZX3 had constant power.

**stevieg** · 05-28-2004, 07:25 AM

Yes mine (UK Focus) has that too through two cig blugs one in the front one in the back, I had to seperately wire in however for switched power by the ignition to surn on/off the car pc