P.23 of the manual tells you how to do it. If you want to assign the input to another track, you must first clear the current assignment, and then re-assign the input. If you need further assistance let me know. If you have a moment to accept and rate my solution it would be greatly appreciated.
Thanks,
lee

Owners manual may be helpful. Have a look below
http://www.tascam.com/products/dp-02;9,16,3580,19.html

This is the answer to the light queston,
they should be on if you assigned the input to the input plugins beside it

Acam's DP02 makes recording simple by matching 8-track CD-quality recording with a Portastudio interface - so you can ditch the menus and concentrate on the music. A pair of record-quality Tascam mic pres feature XLR inputs with phantom power for condenser mics and a guitar in for direct recording. Each channel gives you dedicated controls for instant access to fader level, record arm/track mute, pan, effect send, high and low EQ. There's also an EQ frequency button for finer control over the mix.

Two effects processors are included in the DP02. A multieffects processor on the input provides great-sounding overdrive, flange, delay and more for your guitar, vocal, drum and bass tracks. In addition, there's a reverb processor on a send and return for adding hall, room, plate or chamber reverb to your mix. The DP02 is loaded with great Tascam extras like a chromatic tuner, metronome, and bar-and-beat display for getting around your song.

The DP02 records two channels at a time to a built-in 40GB hard drive. When you're satisfied with your production, arm the dedicated master track for your stereo mixdown. You can transfer your tracks and mixes or backup your song to a computer through a speedy USB 2.0 connection or burn it to a CD with the slot-loading drive. No other workstation makes recording so simple, affordable and fun as the Tascam DP02.

Features:

Two XLR mic/line inputs with phantom power for condenser microphones

Eight-track recording at uncompressed 44.1k/16-bit audio quality

Portastudio-based interface with volume fader, pan, effect send, high and low EQ controls per channel

EQ frequency button to access high and low EQ shelf frequencies

USB 2.0 interface for transferring tracks, mixes and backup files to a computer

Dedicated stereo master track for mixdown

Internal metronome and bar/beat display for song position

Headphone output

Stereo line outputs on RCA analog and S/PDIF optical digital connectors

40GB internal hard drive

Multieffects processor with guitar, bass, vocal and drum programs

Stereo reverb processor with send/return controls for multichannel mixing

Built-in chromatic tuner

Built-in CD-RW burner for CD mastering and song backup

I had a look for u on the net only the small yellow ones light up but ill get back to you about the other question as soon as i find a ansew wont be long thanks from chris