Flying a Lear 25 once out of Pontaic MI and jusy out of FL 350 we had a fire light come on and go out. Not knowing for sure what it was, Being real or not I elected to head for Clevland Hopkins. (Long runways and Fire trucks). We told center that we wanted to divert to CLE. He asked if we wanted to declare an emergency. At this point it was precautionary. Just as soon as I unkeyed the Mike the fire light came on with all the bells and whistles. THAT gets your attention. We did declare the emergency and we were cleared direct to CLE and started the decent out of FL 370. Now it takes a good 25 mins to decend that far. We were headed down hill at a rate of speed the VSI could not keep up with. 2 Fire bottles were shot off and the Fire went out. We told the passengers what was up at this point. We were a little busy to explain at first. Although Im sure they could tell something was up with all the lights up front.

The trucks were all there waiting we landed and taxied right up to a fire truck. No fire ever happened. You cant see the engines from the cockpit so you do everything as if its real.

During the inspection it was found that a neopreame wire connector block had rubbed thru to the pin for the fire loop. It completed the curcuit and caused the lights to come on. Not really an emergency but we treated it as one.

The FAA guy just laughed and said we did the right thing and then just told us to have a good day. I did start to shake after we were on the ground. Fire does scare me

Jeff