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1999 Toyota Corolla Car Radio Stereo Audio Wiring Diagram Car Radio Constant 12v+ Wire: Blue/Yellow Car Radio Switched 12v+ Wire: Gray Car Radio Ground Wire: Brown Car Radio Illumination Wire: Green Car Stereo Dimmer Wire: N/A Car Stereo Antenna Trigger: N/A Car Stereo Amp Trigger Wire: N/A Car Stereo Amplifier Location: N/A Car Audio Front Speakers Size: N/A Car Audio Front Speakers Location: N/A Left Front Speaker Positive Wire (+): Pink Left Front Speaker Negative Wire (-): Violet Right Front Speaker Positive Wire (+): Light Green Right Front Speaker Negative Wire (-): Blue Car Audio Rear Speakers Size: N/A Car Audio Rear Speakers Location: N/A Left Rear Speaker Positive Wire (+): Black Left Rear Speaker Negative Wire (-): Yellow Right Rear Speaker Positive Wire (+): Red Right Rear Speaker Negative Wire (-): White
Go into the boot and access the tail light clusters under their covers in the boot rear corners. Take a lead (you can buy double adapter spade connectors) from (1) a tail light, (2) a brake light, (3) the right indicator, (4) the left indicator. (5) a solid earth wire. Try using different colour wires, making a note of each source and each corresponding colour. Tape them together and lead them to the trailer plug. There is a set international configuration for the trailer plug connections which is shown below.
R Red 24 volts coming from equipment to stat
W White First stage heat (could be W1)
W2 Second stage heat
Y Yellow First stage cooling (could be Y1 on your stat)
Y2 Second stage cooling
G Green Blower
C Common (Neutral)
B Reversing valve for heat pump
O Reversing valve for heat pump
If you have singles transformer system. Rc and Rh will be connected.
If you have 2 separate systems. i.e. Boiler heat and Central Air. Boiler Red to Rh and C.A. red to Rc.
pls on the transformer is writing each wire color to the corresponding voltage you have 2wires low voltage 24 volts(secondary) and other 2 wires power ( primary) also if you follow the uni wiring you will find 3 vwires main power voltage may be 110 or 220 or 380 and two others low voltage commonly 24 volts after identification you can connect each wire to the other .
You have the REMOTE wire hooked to a constant +12V source. The remote wire is supposed to correspond to the ACCY wire to the vehicle, usually through an aftermarket Audio DECK. If it is reaming on when turning the key OFF the wire you currently have it spliced to is a CONSTANT +12V , which is connected directly to the battery. If you do not have a aftermarket Deck, hook the remote wire to the ACCY wire conecting to the factory radio.