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Wiring Headunit

d00dz

By d00dz,
in Car Audio & Electrical

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d00dz Grand Master

d00dz

Posted
Posted

All is good!

------------------------------------------------

OK what have I done wrong now?

I tested the lines correctly and they worked, however now the unit doesnt power on.

I test the ACC (when key is in) there is power.

I test the BATTERY (permanent 12v) and the tester doesnt light up.

Whats wrong???

------------------------------------------------

Hey, I just pulled my headunit that came with the car out.....

Followed the http://r33stereo.groovesystems.net/ guide very good..

However, between the BATTERY / ACC / GROUND lines there seem to be a small black box marked "filter & fuse box" now there is a fuse inside and a coil thing.

Question is: Do I need to use this in my headunit install (ie. connect the head unit wire via this box? The headunit I want to install is the same one that is shown in the guide. JVC one.

Thanks!

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grandmasterb Grand Master

grandmasterb

Posted
Posted
Hey, I just pulled my headunit that came with the car out.....

Followed the http://r33stereo.groovesystems.net/ guide very good..

However, between the BATTERY / ACC / GROUND lines there seem to be a small black box marked "filter & fuse box" now there is a fuse inside and a coil thing.  

Question is: Do I need to use this in my headunit install (ie. connect the head unit wire via this box? The headunit I want to install is the same one that is shown in the guide. JVC one.

Thanks!

You need an inline fuse when wiring the new HU in for the power wire. I would get rid of the stock one and replace it with another one, there only a couple of $'s.

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grandmasterb Grand Master

grandmasterb

Posted
Posted
How come? so for all HU installs you need to have a inline fuse between the BATT/ACC/GROUND?

Wont the one I have now work?

This one doesnt look stock. Check attatchment.

Like any fuse mate its there to protect your wiring and what its attatched to in the event of a short/fault. The one you have now is an inline fuse/with resitor which i have no idea why its there like that, thats the Japanese for you???

The HU will have a fuse in the back already protecting it (around 30a) but adding another one off your power wire will not hurt at all and if you have killed a surge before it even enters the hu (not just leaving the inbuilt fuse to protect it) then theres less likleyhood that anything will get damaged either.

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https://www.sau.com.au/forums/topic/74051-wiring-headunit/#findComment-1360425
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