MTX Thunderform Installation Manual page 5

Although, MlX has made every effort to assure proper wiring colors, MlX
is not responsible for any changes made by the vehicle manufacturer
which sometime3 occur. If wiring colors do not match then physical
verification is required.
Bose Sub System
Warning:
You must have an adapter to convert from the Bose System
to an aftermarket amplifier, we recommend acquiring one and following
the directions provided with the adapter.
CONNECTION TO ENCLOSURE
14. Connect speaker wires to high level inputs of pre-amp.
Note: Patented BTL turn on circuitry- amplifier senses DC offset provided by
"high powered" or BTL type head units. This feature turns the amplifier on
automatically if you are using high level inputs.
1 Dark Blue (+)
Light Blue (-) T
Yellow (-)
Brown (+)
15 Amp Fuse
4