Seeking a switched power source in frunk

[JTT]

I've installed an aftermarket amp and HU in my 2003 MOST Bose Cab.  All went perfect from pinouts provided here for the HU.  After getting everything in, I discovered that I neglected to run a switched source into the trunk to trigger the new amp!  

 

There must have been a switched source in the original harness to trigger the factory amp?  Can anyone identify the wire colour or which plug it is on?

[kbrandsma]

See if this helps!

 

 

Edited March 21, 2016 by kbrandsma

[Loren]

Anything in the wiring diagrams labeled "TERM 15" is switched power.

FYI...

TERM 30 is unswitched power.

TERM 31 is ground.

[JTT]

That's a big help knowing the TERM terminology Loren!  In this case it didn't solve my issue, but is great info for future application.  Thanks!   In this case I ended up running a lead through the firewall into the cabin and tapped into the switched feed to HU. 

[Richard Hamilton]

Too late, I'm afraid, but the heated screen washers are ignition-switched.

[JTT]

Thanks Richard.  Good to know for future though.