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The pink wire is the dimmed earth. The Patrol dimmer switch switches earth. With only one wire for lighting your not really able to have the dimmer function for your gauges in a Patrol.
If you connected it to the pink wire, the lights will dim opposite to your dash lights...... ie
Dash lights on full brightness - gauges low brightness
Dash lights on low brightness - gauges on full brightness
Switch halve way they will be about the same.
The blue with the black is the dash light power, this will turn the lights on and off with the headlight switch.
Last edited by Yendor; 15th December 2013 at 10:16 AM.