HKS electronic gauge wiring?

[Endless]

Just wondering if anyone knows where i can find wiring diagram/install manual for these... had a look around but can't find anything!

They are the white face with black surround, the older model ones not newest..

I have Boost, EGT & Water/Oil temp.

Any help much appreciated!

[HKS_TRD]

Hey there

I have managed to wire all mine up with no instructions, the black wire is earth, the yellow wire is for the lights, and the red and orange are power, not sure which one is constant and which is switched with ignition from memory but I am sure they follow the same convention as car stereos. The other extra wires will be for external warning lights/alarm or to link them all up to a common switch to reset the peak hold on them all at the same time or remote off one of the gauges, I have never dabbled with this tho