Yes, they can be used. From the Q&A:
Quote:
ID:1037 Section:5.3.4 Status:Answered Date Answered:1/11/2005
Q:Can last years Control Spikes be used along with the new Spikes given this year?
A:Yes.
ID:1392 Section:5.3.4.2 Status:Answered Date Answered:1/28/2005
Q:Are the spike relays from last year able to be used on this years robot?
A:This has been answered previously. Please read the answer to #1037.
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