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head unit power problem

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hey guys, i brought up a problem a while back that my battery was constantly draining in very short periods...ive worked out the problem now but need some help to sort it.

basically in my felicia ive worked out that the ignition power cable in the iso power harness goes to the cig lighter power, which is always on. this means that my head unit is constantly using that power

im no car power guru so could anybody give me any idea of where i can tap into the 12v ignition, so that my head unit behaves?

many thanks!

If you are using an iso there should be a red and a yellow lead iirc, you can normally disconnect one to attach to the other colour using the connectors fitted to change the ign on live to perm live, If someone has choppedthe iso about it may be easier tospend the extra fiver and get a new one with instructions and a bit of peace of mind. HTH

Both are constantly on in favorit and felicia.

In the felicia there should be a black wire in the fusebox labelled BF/2 that comes from the ignition switch. You need to tap into this wire and connect it to the correct wire on the stereo. Use a short length of wire and you may find your stereo uses bullet connectors to allow you to swap the wires over - so the best way is to crimp a bullet connector on the end of the wire tapped into the ignition switched one and replace this with the wire from the iso connector.

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great stuff, shall take a look at that tomorrow :D

ive got some pictures to show how it is currently set-up, (ive brought the orange wire round the front for now so i can disconnect it...

f24xt0.jpg

10p3y8j.jpg

scf8d2.jpg

so what your saying anewman is to connet this orange wire to the black wire in the fuse box?

thanks

To the end that leads to the stereo only, yes. I think the ignition switched wire on the stereo is red? So it should be ok put into your terminal block.

It would probably be a good idea to check the wire referred to in the fusebox does switch live with the ignition switch first with a multimeter. Set multimeter to read Volts DC 200. Hold the black probe of the multimeter against the metal of the car and prod the back of the connector with the red probe. With the ignition switch off you should get 0v. With ignition switch on (should be satisfactory to put it in position without running engine) should get you the voltage of the battery so anything from 11v to 12.6v.

If it works right with most stereos the stereo will turn off when the ignition switch is turned off, and memory will be retained.

connecting block.... classy

That's how I wired my fan switch lol. Now I've discovered soldering, heat shrink, and lighters. Heat shrink is great stuff.

yeah, i prefer to see stuff done properly, i've seen too many burnt up looms and fire etc caused by dodgey wiring in the past, i prefer to crimp connections because it's more reliable

connecting block.... classy

indeed. if the car burns to a crisp and that block gets found... guess whos not getting an insurance payout!!

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