91 civic dx have stopped Harlie converted to multipoint running lsvtec have several ECU's outsde of my custom p 75 head distributor issues I I was also blowing fuses so I got new harness hardwired obd1 plugs for ECU which I don't think is the problem being I have wire to wire checked the 0 to 1 everything is where it should be I have swapped out fuse boxes integrated control unit multiple ECU various combinations of coils ICM and sensors rear an individual hard wires to sensors in engine bay I had voltage drop so why are they secondary battery in parallel with the one of my trunk my alternator when it was running only read 13.4 volts the car ran for 3 days after the harness swap no problems then started sporadically dying while driving which got more than more frequent but random sometimes would run for 5 minutes sometimes for 30 seconds when it died it was just dead seems like ignition to me would be driving down road and then flat line so between the low voltage on alternator and battery light staying on I figured it had to do with power supply I'm almost done whole system besides replace alternator but still have been after using my two batteries to be able to run the vehicle for a short amount of time at least I had codes coming up randomly one time I try and I would have 10 2021 6 the next day I would come out and try again solid check engine light or just one of the four or five that popped up previous days I do have a relay on my instrument panel in middle of - I believe it to accessory lighting relay it gets hot really fast I have a bucket of relays I've tried swapping it out with many no change starter and main also replaced can it be electronic load detector o appreciate help this is my daily

 

our 91 civic started doing that when its fuel relay went bad