little help please! - wiring

I have searched the forum before posting thsi question and can not figure it out

I have a 2000 F100 -

purchased the following
6Y5-8350T-82-00 Multifunction tach
68F-82553-70-00 Trim/Oil harness(connects to engine)
6Y5-83553-N0-00 Gauge power harness(connects to 703 control)

I have some wires that have no easy match home..

On the 703 controls
double female red wires
Double Female Light Blue
Double Female light Green

on the Tach a Yellow by the single fuse
and a Blue

everything matched up otherwise.

any help or info would be great.

Thanks

anyone?????

[boats.net]

There should be another set of wires coming out of back of 703 control box with green,yellow, red and black wires.

yes there is....they matched up to the wiring harness I purchased except for one red that lone wire did not match up to either "optional" harness from the tach...

ideas?

[boats.net]

The red wire is only needed for Speedometer.