i need to knw where to start on 1990 Honda Accord

honda dealership they said the fuse blow when they start the car i need to re Wire the electric system

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2 answers
Which fuse blew? What system was affected? Do you really need an entirely new wiring harness?

Autozone does have repair guides free online for many makes/models of vehicles. I have used it with some success since they often provide wiring diagrams. Most auto parts stores carry Haynes manuals but you might be able to find a factory service manual for your Accord on ebay.
http://www.autozone.com/shopping/repairLanding.htm
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