Author Topic: LS in 89 sedan wiring help  (Read 2462 times)

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Offline 88LShatch

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LS in 89 sedan wiring help
« on: April 01, 2011, 11:39:54 pm »
I just picked up a 89 sedan lx. The plan was to pull my ls swap out of my 88 hatch and put in the sedan. The problem I am havin is that the sedan is a dpfi and I'm missing two wires on the dizzy the blue green and blue yellow. I'm runnin a obd1 dizzy and a p28. Any help on what ti do would be greatly appreciat ed

Offline EFSleeper

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Re: LS in 89 sedan wiring help
« Reply #1 on: April 02, 2011, 04:26:52 am »
"Swap and switch method (less cutting and soldering)
-Pins B10 and B12 are empty meaning there are no wires going into them as a general rule, however some models have a wire at B12. If you have wires there de-pin them and pull them out.
-De-pin C1 and C2 from their plug and plug C1 into B10s spot and C2 into B12s spot. By doing this you just saved yourself the need to solder any cut and solder at least 2 wires.
-Pins B2 and B11 have wires going into them but they are not used for anything on most cars (see Automatic s and Exception s above).
-Take the pin/wire from B2, de-pin it (this means pop it out of the plug). Now solder and heatshrin k on a length of wire long enough to reach into the engine bay all the way to about 1ft after the fire wall. I say this because I like to add a plug right after the firewall later on so you can unplug your whole engine harness if you ever need to. You can do this in comfort outside of the car. Once you are done pin this wire into C1's now empty spot.
-Take the pin/wire from B11, de-pin it and solder and heatshrin k a length of wire onto it just like you did for B2. Once you are done pin this into C2's now empty spot.
-Cut wires at A3 and A7, solder and heatshrin k wires to the plug side of A3 and A7 and run them into the engine bay, make sure you mark them. Now you should have 4 wires running into your engine bay."

Offline 88LShatch

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Re: LS in 89 sedan wiring help
« Reply #2 on: April 02, 2011, 05:05:33 pm »
This may be a stupid ??? But where do them 4 wires go I take it two go to the dizzy and the other two are injectors .  After lookin somemore is see that whoever had this sedan has jumpered into the fuel and aux fuel comin from the ecu and two other wires that I reckon the dizzy but not sure the wires a a2 and a4 r the fuel ones and c1 and c9 r the dizzy ones and again thanks for all the info

Offline EFSleeper

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Re: LS in 89 sedan wiring help
« Reply #3 on: April 02, 2011, 09:18:36 pm »
http://hondacrx881.tripod.com/mpfiswap.html

this link is a little bit more detailed as to where the wires go

http://www.b20vtec.com/forums/technical-information/436716-dpfi-mpfi-conversion-diagrams.html

this one has more pics and is kinda idiot proof if you have never done the wiring before  ;D

Offline EFJames

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« Last Edit: April 02, 2011, 10:50:07 pm by EFJames »

Offline 88LShatch

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Re: LS in 89 sedan wiring help
« Reply #5 on: April 04, 2011, 06:38:49 pm »
Thanks for all the info got her wired up and runnin great hopefully will get pics up soon

Offline 88LShatch

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Re: LS in 89 sedan wiring help
« Reply #6 on: May 31, 2011, 02:11:52 pm »
Ait now I got another ? I got the sedan all together and runnin great I drove it up town the other and she did great then the next night I went to start it up and I noticed when I turn the headligts on both turn signals and my bright light indicator stayd on and the tach stops workin but with headlight s off everythin g works like it should I've also noticed when I turn the headlight s on the clock and radio turns off and input would be much appreciat ed


 

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