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obd1 LS to 99ex coupe

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Old Oct 20, 2009 | 04:25 PM
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Default obd1 LS to 99ex coupe

hey guys i need help about this swap... i already got t-bracket and driverside mount from 99-00 si, conversion harness obd2b to obd2a and obd2a P75 ecu. now im wondering what kind of distributor do i need to use? can i use d series alternator to run this motor? How to bypass CKP sensor? thnks
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Old Oct 20, 2009 | 06:04 PM
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Default Re: obd1 LS to 99ex coupe

any1?
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Old Oct 21, 2009 | 01:26 PM
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Default Re: obd1 LS to 99ex coupe

hello i need help
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Old Oct 21, 2009 | 02:49 PM
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From: Griffin Ga
Default Re: obd1 LS to 99ex coupe

I just snagged this from another post listing dizzy issues. Feel free to use my link in my photobucket, i have unlimited bandwidth.

It depends on the plugs at the end of the harness where you plug your alternator and distributor in. i would say use the stock alternator for the car and use the distributor that fits (splicing wiring always causes a pain). the plug guide for the dizzy should help.

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Old Oct 21, 2009 | 03:29 PM
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Default Re: obd1 LS to 99ex coupe

Your going to have to swap the engine harness distributor plug regardless of the dizzy you choose. You can go with a obd2a or b teg dizzy. You might be able to use the obd1 I'm not sure.

I repinned my stock harness to the obd2 big plug and used a 99 teg distributor.
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Old Oct 21, 2009 | 04:38 PM
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Default Re: obd1 LS to 99ex coupe

i highly disagree with cutting a harness, but depinning is good if you understand how. but i believe you will run into issues about the rpm lead signal reguardless. you can not use a obd2b because of the rpm lead signal.
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Old Oct 21, 2009 | 04:40 PM
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Default Re: obd1 LS to 99ex coupe

so basically i need obd2a dizzy?
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Old Oct 21, 2009 | 04:41 PM
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Default Re: obd1 LS to 99ex coupe

what about alternator? can i use my d16 alternator on the b18
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Old Oct 21, 2009 | 04:56 PM
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Default Re: obd1 LS to 99ex coupe

i believe your going to need an abd2a harness or run your wires for the two extra pins that you cant connect to. (rpm lead signal both + and -) but you will need to ensure that you depin the plug in and add the two wires, see if any of your friends has a mangled harness with the end on it. if you do not, your tach wont work.

and yes, you can use your stock alternator if it will line up.
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Old Oct 21, 2009 | 05:01 PM
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Default Re: obd1 LS to 99ex coupe

where do i need to connect the 2 wires? direct to the ecu?
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Old Oct 21, 2009 | 05:04 PM
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Default Re: obd1 LS to 99ex coupe

you could, it may be a little iffy if you dont do it properly, then you will have random miss fires, random intervals of your tach not working. you could you still have to run 2 wires for the leads i was talking about earlier.
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Old Oct 21, 2009 | 05:15 PM
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Default Re: obd1 LS to 99ex coupe

so tell me how to do it properly? do i need to solder it and heat shrink tube
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Old Oct 21, 2009 | 05:23 PM
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Default Re: obd1 LS to 99ex coupe

your bet bet is to depin the connector. the info is available in the link to another post on this site. it is for a teg guage cluster but you will bet the idea on how to do it. no soldering and no heat shrinking.

https://honda-tech.com/forums/honda-civic-del-sol-1992-2000-1/94-97-98-01-integra-cluster-into-92-95-96-00-civic-wiring-diagrams-1053318/
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Old Oct 21, 2009 | 05:40 PM
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Default Re: obd1 LS to 99ex coupe

i kinda got it now.. so heres my question? im gonna be running my stock obd2b engine harness and im gonna get the obd2a dizzzy, so im gonna need a obd2a dizzy plug ryt? how can run the 2 wire from the plug to the ecu without soldering? my guess is I HVE TO DEPIN THE ECU harnees too?
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Old Oct 21, 2009 | 05:44 PM
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From: Griffin Ga
Default Re: obd1 LS to 99ex coupe

use an obd2a dizzy, depin the obd2b harness at distributor, repin for obd2a, and add the two wires you need to the ecu.
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Old Oct 22, 2009 | 06:34 PM
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Default Re: obd1 LS to 99ex coupe

Originally Posted by xero_xero
use an obd2a dizzy, depin the obd2b harness at distributor, repin for obd2a, and add the two wires you need to the ecu.
Adding wires are not necessary. I repinned my stock 99 civic harness to the obd2a integra dizzy plug. You have to swap connectors on 2 wires due to the fact the civic harness uses all small pins and the integra uses all small pins except 2.
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Old Feb 15, 2010 | 07:43 PM
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From: Griffin Ga
Default Re: obd1 LS to 99ex coupe

did we ever solve your questions on installing the engine?
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