LS swap in my 99 civic
02-12-2011, 10:53 AM
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LS swap in my 99 civic
ok so i've been searching and searching with little info gained. i swapped a 95 b18b1 obd1 into my 99 civic which is obd2. i am using the wire harness from the d16y8 that came out of the civic to switch the obd1 b18b1 to a obd2 b18b1. can anyone help me in the wiring aspect of this build for this is not my fortay. i already now i will have extra connectors seeing as the car is going from vtec to non-vtec but is there any connectors that need to be switched or extened? please help
02-12-2011, 11:26 AM
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Re: LS swap in my 99 civic
get alternator dizzy obd2 and bam should be the same. Dont need to unwire vtec. Rather worry about what ecu to run. I would personally jumper the obd2 to obd1 and use your same harness. You will have to rewire your dizzy and alternator for obd1 but that is hella easy.
02-13-2011, 08:53 AM
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Re: LS swap in my 99 civic
yeah i have already rewired the alt. and the dizzy and i have the jumpper harness. ihooked everything up and used the ls p75 ecu. well when i turned the key the ecu started smokin...now i went and bought a p06 ecu. i want to make sure everyting is in the right place and conected right before i try turning the key again i just cant figure out what the issue is
02-13-2011, 09:14 AM
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Re: LS swap in my 99 civic
Um never seen an ecu go into flames but that obviously means that you did not wire something right. I would go get a multimeter and a 9-volt battery and and ecu pinout guide for obd1 and 2. I would then take you ecu out and make something ghetto to apply voltage to each wire. The wires that correspond to sensors should be checked first by the multimeter on the other end...Ill draw you a picture hold on...Ill have to host it
02-13-2011, 04:44 PM
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Re: LS swap in my 99 civic
thanks bro, imma try this tomorrow after work. this is my first motor swap and my 2nd honda owned. doing this all by myself and its my only car. i can't thank you enough man.
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02-14-2011, 07:12 AM
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02-14-2011, 01:08 PM
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02-14-2011, 03:43 PM
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Re: LS swap in my 99 civic
ok so i hooked everything up and it smoked again so i decided to bust out my meter and try to pinout what it is that is making it smoke and i ohm'd out the pin to the piece in the ecu that was smokin and it come out to be A25 in the odb1 diagram.
02-16-2011, 12:22 PM
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Re: LS swap in my 99 civic
update: after i pinned out the issue the dizzy was wired wrong 
so i fixed it and then found out i have a evap sensor pluged into the wrong place so im going to pin that out and let ya'll know what happens
so i fixed it and then found out i have a evap sensor pluged into the wrong place so im going to pin that out and let ya'll know what happens
02-16-2011, 09:08 PM
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Re: LS swap in my 99 civic
You should like you are finding the problem...but I cant help you for you wire it wrong. GL
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