You are talking about a Relay, not a Circuit breaker, right? Talking about the OCR, or Opening Circuit Relay?
I've never ever seen a circuit breaker in any Toyota truck, other than fuses, and I've never seen a circuit breaker in any of the wiring diagrams I've read.
You've got me courious now, could you take a picture of it? 
Glad to hear you are getting it fixed and back on the road! 
Ok man, you got it right "Circuit Open" relay P/N 85910-14020 (ND 056700-5770). I didn't get a pic, but it's mounted directly behind the passenger side speaker above the ECU (85 p/u). From what I read into on this thing, it is supposed to put an open in the fuel pump circuit when the ignition system is on but the motor is not turning. Seems they are mounted in close proximity to the ECU in most models including MR2's. Does that sound about right? Didn't mean to confuse anyone there.
Thanks for all the info guys (update: she's running like a champ and going with me hunting this weekend, bet I can find some rocks to play on
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