Double Din set up

[pintara91]

Thanks for your reply. sorry to be dumb, but can you explain how the split harness works please, and what i will require?

i will be running all audio from the new headunit, and the existing unit will take aircon etc.

can i use a honda iso plug? if so what would i connect up and what would i leave?

thanks in advance.


Jake

[safetycar]

1: Window Antenna Coil Amp.
2: Ign/Switched +12V
3: Steering Wheel Controls +ive.
4: Multiplex Integrated Control Unit
5: RR +ive
6: LR +ive
7: RF +ive
8: LF +ive
9: Illum./Dash Lights
10: +12V
11: Steering Wheel Controls Ground
12: Nav. Unit
13: Nav. Unit
14: Nav. Unit
15: RR -ive
16: LR -ive
17: RF -ive
18: LF -ive
19: Dimmer
20: Ground

http://www.ozhonda.com/forum/showthr...rness-Pin-Outs
That's the stock wiring harness.
1: Window Antenna Coil Amp. ->to new unit
2: Ign/Switched +12V -> to both
3: Steering Wheel Controls +ive - > to SWC unit or new HU if it supports OEM controls directly.
4: Multiplex Integrated Control Unit -> not sure if required. safer to wire to old unit
5: RR +ive -> all speaker wires to new unit if using stock wiring. Tape/shrink tube if using RCA's
6: LR +ive - >ditto
7: RF +ive - >ditto
8: LF +ive - >ditto
9: Illum./Dash Lights -> to both
10: +12V -> to both or run new 12V line to new unit.
11: Steering Wheel Controls Ground -> could wire to SWC, but any ground will do.
12: Nav. Unit -> not needed
13: Nav. Unit -> ditto
14: Nav. Unit -> ditto
15: RR -ive -> ditto
16: LR -ive -> ditto
17: RF -ive -> ditto
18: LF -ive -> ditto
19: Dimmer -> to old unit or don't bother.
20: Ground -> split or use new ground point.

Honda to ISO plug? Wouldn't recommend. Use the ISO to bare wire plug that came with your new HU and buy a female Honda plug which goes to the stock harness. Also need a mail harness to go into the original unit. Then just a matter of wiring from the female connector to either the old, new or both. Also keep in mind that the metra harnesses don't have all the pins/wires so you may have to swap pins to for instance get the steering wheel controls working and if you need all the pins, then you need two harnesses so you can grab the extra pins off of the 2nd.

So one of these to plug into the original unit (if you need additional pins, just swap out a speaker wire):
http://www.amazon.com/dp/B000PC5IE6/..._26725410_item
one of these to plug into the factory harness and a 2nd if you need the extra pins:
http://www.amazon.com/dp/B0002BF09S/..._26725410_item
and if keeping steering wheel controls on a unit that doesn't support them directly:
http://www.amazon.com/dp/B00B4PJC9K/..._26725410_item

You can see from above they are missing:
3: Steering Wheel Controls +ive.
4: Multiplex Integrated Control Unit
11: Steering Wheel Controls Ground
12: Nav. Unit
13: Nav. Unit
14: Nav. Unit

Nav, presumably not an issue. MICU, I don't know. SWC ground, can ground on anything, SWC+, maybe not an issue?

I'd suggest soldering and heat shrinking all joins.