R33 Headunit Wire Colours

[Paris Hilton]

Hi all,

installing a headunit into my car, the wiring loom has been badly butchered, so time to sort out the mess.

exactly what colour should the 12V illumination wire be?

car is a '93 R33 GTS-T

thanks.

[mr-r33]

http://www.skylinesaustralia.com/forums/Wi...am-t252940.html

[Paris Hilton]

yes i have read that

it does not list the illumination wire

the stock loom does not have one (i guess), so i'm trying to source one, as my butchered loom has lots of not stick wire colours,

[RusH_]

Typically

Yellow is 12V(constant power)

Red is accessories(key set to accessories)

Orange is Illumination(headlights)

that said, the best way to be sure is as follows:

grab a test light from super cheap or repco (no more than $10)

-switch your key to the 'on' position

-turn on the headlights

-test your wires one at a time by touching the positive prong to the wire and the negative prong to a good earth point on the chassis, (should be plenty around the head unit area)

if done correctly 3 wires should cause the test light to light up, these are your CONSTANT POWER, ILLUMINATION and ACCESSORIES.

switch off the headlights with the key still set to 'on' and test those 3 wires again, only 2 of them should work, the one that doesnt work is your illumination.

[Paris Hilton]

it seems both these guides are 100% wrong for my car.

[Paris Hilton]

ok here it is

http://www.groovesystems.net/ns2500/

that guide works fine

the wire i was looking for is red/purple... so illuminance is red/purple.

thanks

[RusH_]

that's a really odd color for your illumination, that said, if you tested all of your wires using a test light as i stated you would still be able to work out which 3 were illumination, constant power and accessories

[Paris Hilton]

i did use a test light.

well, i used the 12V ign for the headunit, so the headunit became a test light

[INLINE6]

that site doesnt work anymore?

[jhjones]

I think illumination is red/blue.

[Carbon 34]

Typically

Yellow is 12V(constant power)

Red is accessories(key set to accessories)

Orange is Illumination(headlights)

that said, the best way to be sure is as follows:

grab a test light from super cheap or repco (no more than $10) Never use a test light on a modern car, you will trigger the airbags or fry the ECU etc in a heartbeat. by blind probing wires. for under 20 bucks you can get a cheapo digital meter !!!

-switch your key to the 'on' position

-turn on the headlights

-test your wires one at a time by touching the positive prong to the wire and the negative prong to a good earth point on the chassis, (should be plenty around the head unit area)

if done correctly 3 wires should cause the test light to light up, these are your CONSTANT POWER, ILLUMINATION and ACCESSORIES.

switch off the headlights with the key still set to 'on' and test those 3 wires again, only 2 of them should work, the one that doesnt work is your illumination.