My buddy just bought a 1997 ssei and wants to replace the stereo. Is there any way that we can hook the factory bose amp up to work?

you mean with an aftermarket HU?

indeed

it can be done for sure, my GXP have a Monsoon sound system (amp too ofcourse) and i had to use an aftermarket harness to get it going
im just not sure which harness you would need, hopefully someone with a 97 would show up soon

Just so you're aware...aftermarket everything > Bose. The old Bose stuff still used paper cones so anything after market will sound tons better.

TO HOOK THE AMP UP JUST CUT THE STOCK connector off the end of it it is the orange wire its the connector that has only one wire and its orange cut the connector strip come coating off the end and when you wire the aftermarket harness to the decks harness splice it in to power antenna wire and there you go

i miss the edit button and also if you dont do that you will have no sound you HAVE to hook it up

Search for my post on it from Junish of 05. I popped the pin out of the connector and ran that to the amp output of the new HU.