Toyota 5199 Receiver

[dodgerdave]

i have a 1986 toyota celica cab which i have been restoring

i am just about finished and she is looking smart

i want to fit a toyota 5199 radio/receiver in but do not no how to wire it up

2 blue plugs on back

one has 4 wires, red,white,black,yellow(will not require auto retractable aerial)

second plug has 10 wires which i assume are for Speakers but i could be wrong

can anybody help

[GTForbes]

Red: 12v constant live

Black: earth

White: ignition live

Yellow: illumination, light switch.

That's off the top of my head.

How many Speakers does the cab have?