Question about 1987 Honda Prelude
Hi, the wire to the computer is inconsequential to the operation of the charging system. Have you replaced the regulator?
Posted on Oct 01, 2011
I would check the main bus fuse to teh charging system in teh Power Distribution box and make sure that is good, if you are doing all these checks because your ALT light is on it may not be the Alternator. The Prelude had one light for the battery and the Alternator. If the battery has a bad or dead cell in it that is keeping it from charging the ALT light will come on. If any positive wire on the system is grounding under the hood you will get a no charge condition. This is common in older vehicles if the main positive going to the starter has worn a bare spot against the frame or engine and grounds that wire so check that as well. Take the battery to Auto Zone or Advance Auto and have it checked and load checked. They can tell you if it has a dead cell or just needs charged.
Posted on Oct 02, 2011
CHECK ALTERNATOR FUSE AND REPLACE BOTH BATTERY CABLES. IF BOTH BATTERY CABLES VERY OLD.THAT WILL CAUSE HIGH RESISTANCE IN CHARGING SYSTEM.ALTERNATOR IS NOT GETTING NO BATTERY FEED POWER THATS WHY IT CANT CHARGE BATTERY.THE POSITIVE FEED WIRE TO ALTERNATOR COULD BE BROKEN.
Posted on Oct 02, 2011
DX:ECU IS RIGHT PASSENGER SIDE RIGHT FOOT
SI:ECU IS LEFT BACK SEAT LEFT ARM
I now be cause i looked and took my back seat down and out of my DX It would be nice if there was one book for one model got to pay attiention to the headings carb or fi.Good luck it just takes time you might have to get a factory oem electrical book helpfull more detail it must be something simple grounding somewhere I have packratts eating at my hondas and truck wiring all the time?It makes for a challange what works is liqued tap from the hardware store if you ever have a **** story of such Hot Ariz.Desert TT80500
Posted on Oct 17, 2011
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Posted on Jan 02, 2017
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