Stereo Wiring Help

[Cash31]

Hey all,

I recently purchased my Cefiro. It is an RB20DE But I was lucky enough to find a factory manual.

One of the first things I did was attempt to put in a spare head unit I had lying around. Upon pulling out the original unit, there were a LOT more wires than I expected to find. I gather that some of them are for the electric aerial etc. but there are still a lot of "spare" ones.

After finally working out which ones were the speaker wires I wired it all up only to find out the head unit had no power. Then when I turned on the headlights, the head unit suddenly worked, and when i turned them off, so did the head unit. I got out the old trusty multimeter and discovered that what i first thought was the accesory wire (since it was in a three hole plug with the negative and the battery wire) was actually something to do with interior lighting. I tried most of the other remaining wires and none of them seemed to respond to the accoesry switch. Id also rather not wire the accesory to the positive wire either.

If anyone has any advice or wiring diagrams etc it would be much appreciated as im also struggling to work out which wires operate the rear speakers.

Cheers,

Cash

[huddy]

even check with a test light. thats all i did in mine to find the common power for memory etc.

and then check all the others with the accessories on (keys turned) to find another power wire. switch off ignition and check that power is off.

shouldnt be too hard. sorry cant remember what colours specifically are for what in the std stereo loom bit.

[BenA31]

if you still have the factory plugs attached or cut them off try match each item up with the colours mentioned here - > http://www.installdr.com/Harnesses/Nissan-Wiring.pdf

I used that diagram for mine and it matched up fine!

[AlcoholicA]

here - > http://www.installdr.com/Harnesses/Nissan-Wiring.pdf

I used that diagram for mine and it matched up fine!

I used that too, and completely rewired my headunit with new speaker cables instead of the crappy thin ones that in my car had been cut and spliced all over the place....

For some strange reason, most car stereos here in Thailand are wired to power-on from a permanent feed but I wanted my headunit to power-on with the ignition. This diagram acheived what I wanted, and I didn't bother with the power antenna or the "dimmer" function that works when the headlights are turned on [the wire that you had used as your power source], and everything works perfectly - no power surges or excess drainage or loss of memory settings as were the problems with my old headunit

Here's a copy of the section in the above pdf file that you can view easily... [i know not everyone can view pdf's]

[Cash31]

Thanks heaps guys. That diagram really pointed me in the right direction. But I'm still struggling to find the accesory wire. The blue one as described in the diagram and on the plug actually has no current when in accesory mode, or at all for that matter. After a few tests with the multimeter I discovered it was earthed, so either its shorting somewhere along the line, or I've been stooged with my accesory wire. I think I may just get the autosparky at work to have a look at it and see if he can pull an accesory wire from somewhere.

But much thanks for the help guys

[Cash31]

Just to update...

I talked to my uncles technician, and he immediately knew what was going on. He told me that one of the fuses had blown and thats why the accesory wire was shorting out.

Sure enough when i got home i cranked out the multimeter and found a fuse to be blown, replaced that and now all is sweet.

Cash