Those vibe amps are great little amps. I've got the 65.4 running my 4 x mids and tweeters and the 400.1 running 2 x 6" subs, and it sounds superb, albeit it's an e89.
Might be worth taking the dash clocks out and strip them back to see if someone has taped over the light. It wouldn't be the first time I've seen that. It's quite a simple job. 1 screw, then unclip the plug, if memory serves.