I assume you are talking about the space beneath the radio above the cupholders. The pre-98 consoles had a DIN-sized storage tray, so yes it is possible to mount something there. I would not touch anything behind it though. The relay you refer to is the airbag controller, not a good thing to fool around with.
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Louis Wang
Sugar Land, TX
1998 Black E0 #3826
http://web.wtez.net/tw57472
