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drowzysleeper · **Posted:** Sat Jan 19, 2008 11:29 am

hey guys i swapped a b18b into my dx hatch im wondering if i have to use the original wiring harness from the car or should i use the ls one? my car wont start with the ls harness but the starter is good and the battery is good what else could possible be wrong? it wont even turn over. any help would be great tia
shawn

4sd4dr · **Posted:** Sat Jan 19, 2008 11:57 am

use the stock civic harness as you should do with every swap

drowzysleeper · **Posted:** Sat Jan 19, 2008 4:10 pm

is that y im haveing problems?

4sd4dr · **Posted:** Sat Jan 19, 2008 4:18 pm

I would assume so, yes.

drowzysleeper · **Posted:** Sat Jan 19, 2008 8:51 pm

after checking the plugs most of the wires are different. what sux is i dont have the stock wiring harness how exspensive is a dx hatch harness and is there a good place to get one online?

IBleedJDM · **Posted:** Sat Jan 19, 2008 10:27 pm

Some of the 92-95 civic DX's Had a Map sensor on the firewall and that will be the difference. Even if the wiring harness you have on the LS plugs up, if it has a plug for the throttle body MAP then the ECU still wouldn't receive the proper signal and therefore wouldn't start. I've been EXACTLY where you are.

drowzysleeper · **Posted:** Sun Jan 20, 2008 8:59 am

yeah i did some research and im thinking that the 92's were the ones with the map on DA firewall. 93-95 had them on DA tb so i need one from a 93-95.

IBleedJDM · **Posted:** Mon Jan 21, 2008 7:37 pm

No Not really you just need the engine bay harness that came with the car or one from an equal. Even if its wired for the firewall the plug is still the same so it will plug into the Throttle Body.

drowzysleeper · **Posted:** Mon Jan 21, 2008 9:17 pm

how much would a wiring harness usually cost? i have no idea and dont want to get ripped off. are there any websites i can go to that sell them.

jdmontheway · **Posted:** Sun Jan 27, 2008 3:39 pm

when i did my friends ls into a hatch,i used the stock harness. everything worked. but i cant remeber what year the hatch was 92 or 94 it was the cheap hatch

drowzysleeper · **Posted:** Sun Jan 27, 2008 6:43 pm

yeah im getting the stock one to try it the only thing that sux is that i dont have the stock one

03akkord5spd · **Posted:** Thu Jan 31, 2008 11:07 pm

had a similar question, when putting an obd1 LS into an obd2 civic, i can use the civic harness and be good to go, correct?

drowzysleeper · **Posted:** Fri Feb 01, 2008 7:48 pm

i think you will have to change your intake mani, injectors, and dizzy. but i might be wrong.

mp82 · **Posted:** Fri Feb 22, 2008 8:40 am

You will also have to convert the oil pump since there is a crank sensor down there or by pass it at the ecu.

IBleedJDM · **Posted:** Sun Mar 02, 2008 6:14 pm

mp82 wrote:

You will also have to convert the oil pump since there is a crank sensor down there or by pass it at the ecu.

Conversion harnesses solve this problem.

drowzysleeper wrote:

i think you will have to change your intake mani, injectors, and dizzy. but i might be wrong.

Intake manifold doesn't matter, injectors need to be OBD2 but with an easy rewire you can use the old ones, and the dizzy is the main issue as you will need the OBD2 or a conversion adapter from Password:JDM to use the OBD1

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