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Dr Tweak · 11-03-2006, 02:40 PM

Hi everyone,

I've spent several hours searching this and other forums on this matter and I can't seem to find the answer. I'm doing an H22 swap into a '99 Civic DX. I'm using the P13 ECU, modifying the Civic harness, and the engine is from a '93. I've been wiring it up and that's been going fine, until I got to the distributor. The 8-pin distributor plug on the Civic harness has all 8 pins filled, but in the diagrams it shows that there is a 9th wire, a blue one, that goes to the tach. It doesn't seem to be here. On the H22 distributor, 7 of the 8 pins are filled, the missing one being the Black/Yellow power wire, which is on a seperate 2-pin connector along with a Blue wire (which I guess is the tach wire). Where is this blue tach wire on the Civic harness, and where does it need to go?

Dr Tweak · 11-07-2006, 08:43 AM

Anyone?

formby · 11-07-2006, 10:56 AM

it has to be there....

Dr Tweak · 11-07-2006, 02:03 PM

Well... it isn't... heheh

hb91 · 11-11-2006, 05:08 PM

coil negative is the tachometer wire, i don't know what's going on with your distributor but that wire is supposed to the gauge cluster harness. i would need more details about your wiring to know exactly what you're trying to do. and is the wire cut or just missing all together. is this a new distributor, or did it come with the engine that you are putting in?

if you haven't already i would open up the distributor and see what is going on.

Dr Tweak · 11-11-2006, 05:47 PM

Okay, let's see if this helps out. Here is the distributor on the H22 engine. You can see that I used the plug from the Civic, and I swapped the power wire (black/yellow) over to the Civic plug (which had 8 pins filled, all of the pins matched except for the power wire on the H22 distributor which was on a large two-pin connector). You can see the blue "engine speed output" wire isn't attached to anything, and there doesn't seem to be one on the Civic harness.

Here are the plugs from the H22, you can see that only 7 pins on the 8-pin connector are used (the 8th one being the black/yellow power wire which is on the large two-pin connector), and then the blue wire on the large two-pin connector which is the "engine speed output" wire.

And here is the Civic distributor, the only difference being that I have stolen the pin for the coil power wire from the 8-pin connector:

Again, I have the blue "engine speed output" wire on the H22 distributor, I just need to figure out where to attach it on the Civic harness.

Thanks for the help!

-Doc

Dr Tweak · 11-18-2006, 04:14 PM

I think I figured it out. This car didn't come with a tach stock, so they don't have the wire in the harness. Am I right?

hb91 · 11-18-2006, 04:47 PM

sorry i haven't replied i haven't checked my mail in awhile.
if it didn't that would be strange.
it would cost honda a lot more to make two different harness' than it would to just reuse the same one and put in a different cluster.

are you putting a tach cluster in it or an external tach? i'm still a little confused as to what goal you're trying to achieve.

Dr Tweak · 11-18-2006, 04:52 PM

Yeah that's exactly what I was thinking, but I never located a tach wire on the stock Civic harness, and there is no stock tach. The customer already installed an aftermarket tach, which I hooked up to the blue wire and it works perfectly. The swap is complete.

-Doc

hb91 · 11-18-2006, 11:56 PM

if that is the case then i would leave it be.

Dr Tweak · 11-19-2006, 12:02 AM

Oh no doubt, it's no longer at my shop. I was just following up on the thread. Thanks very much for trying to help out.

-Doc

erdalh22 · 05-06-2008, 10:57 AM

hi,
I have swapped 93 h22 on 99 civic. and I have the same problem.. is anybody using stock tach? my tach is working wrong is anybody solve this problem

Dr Tweak · 05-07-2008, 10:31 PM

Actually I figured out the problem was that the Civic I was working on didn't have a stock tach, so the wire didn't exist. In your case, you do have a stock tach so it's a different situation. I don't know what's going on with yours, but I do carry tach adapters that you can use to calibrate the signal, they are $75 plus shipping. My email is drtweak@phoenixtuning.com

-Doc

BrutalB83 · 05-07-2008, 10:45 PM

Wow...I'm seriously impressed that you showed up to answer a question about your two-year-old thread...

Dr Tweak · 05-07-2008, 10:52 PM

Thanks, I try to subscribe to most of my threads so that I can keep track of them, I got this notification in my email so I'd thought I'd drop by and help if I could. This is one of the better Honda forums out there so I try to swing through every now and then

-Doc

LS_VTEC · 05-07-2008, 10:52 PM

Dr Tweak... your another one on here sippin' the kool-aid eh? You do not need a Tach Adapter for christs sake. How do you think you can plug in other clusters with tachs and have the tachometer work just fine?

An easy way to find the wire from the coil is to take a small tachometer and pinch it into the wires on the harness until you find the correct wire.

Dr Tweak · 05-07-2008, 10:56 PM

Honestly I have no idea, he said his tach was reading but not correctly, and I use this tach adapter to fix that problem on swaps like when we put 2JZGTEs into 240SX cars, so that's all I had to suggest

-Doc

erdalh22 · 05-08-2008, 04:14 PM

thanks dr. tweak
I agree with you this is a voltage problem between engine and stock tach of the car.. the calibration will solve the problem. I will turn back you from e-mail..
thank you very much

11-03-2006, 02:40 PM	#1
Dr Tweak Member Join Date: Nov 2006 Posts: 42 iTrader: 0 / 0% Rep Power: 7	H22 / '99 Civic - Mystery of the missing RPM Output Wire Hi everyone, I've spent several hours searching this and other forums on this matter and I can't seem to find the answer. I'm doing an H22 swap into a '99 Civic DX. I'm using the P13 ECU, modifying the Civic harness, and the engine is from a '93. I've been wiring it up and that's been going fine, until I got to the distributor. The 8-pin distributor plug on the Civic harness has all 8 pins filled, but in the diagrams it shows that there is a 9th wire, a blue one, that goes to the tach. It doesn't seem to be here. On the H22 distributor, 7 of the 8 pins are filled, the missing one being the Black/Yellow power wire, which is on a seperate 2-pin connector along with a Blue wire (which I guess is the tach wire). Where is this blue tach wire on the Civic harness, and where does it need to go?

11-07-2006, 10:56 AM	#3
formby learning in progress Join Date: Feb 2003 Age: 27 Posts: 5,742 iTrader: 4 / 100% Ride: 00' Montero sport, 99' lsv civic Rep Power: 93	it has to be there.... __________________ SOMETIMES IN LIFE WE ALL NEED CHANGE! http://pandora.com/

05-07-2008, 10:45 PM	#14
BrutalB83 Brutal Moderator Join Date: Jun 2006 Location: Rochester Hills, MI Age: 26 Posts: 7,822 iTrader: 0 / 0% Ride: 97 Integra LS Coupe Rep Power: 191	Wow...I'm seriously impressed that you showed up to answer a question about your two-year-old thread... __________________ If you find something I say helpful, please send some rep my way! Also, DO NOT PM me with tech questions! Use the forums so we can all benefit from the answers. I will NOT respond to tech-related PMs... PSN Network ID: BrutalB83

05-07-2008, 10:52 PM	#16
LS_VTEC you get the BRAKE Join Date: Dec 2007 Location: NJ Posts: 2,617 iTrader: 0 / 0% Ride: 99 YZF-R6 Rep Power: 43	Dr Tweak... your another one on here sippin' the kool-aid eh? You do not need a Tach Adapter for christs sake. How do you think you can plug in other clusters with tachs and have the tachometer work just fine? An easy way to find the wire from the coil is to take a small tachometer and pinch it into the wires on the harness until you find the correct wire. __________________ eg hatch (jdm b16) sold 1999 Yamaha YZF R6 (modded) http://hondaswap.com/engine-building...ow-pics-102486 sold

05-08-2008, 04:14 PM	#18
erdalh22 Junior Member Join Date: Aug 2007 Posts: 2 iTrader: 0 / 0% Rep Power: 0	.... thanks dr. tweak *I agree with you this is a voltage problem between engine and stock tach of the car.. the calibration will solve the problem. I will turn back you from e-mail..* *thank you very much*


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11-07-2006, 08:43 AM	#2
Dr Tweak Member Join Date: Nov 2006 Posts: 42 iTrader: 0 / 0% Rep Power: 7	Anyone?

11-07-2006, 02:03 PM	#4
Dr Tweak Member Join Date: Nov 2006 Posts: 42 iTrader: 0 / 0% Rep Power: 7	Well... it isn't... heheh

11-11-2006, 05:08 PM	#5
hb91 Junior Member Join Date: Aug 2006 Posts: 10 iTrader: 0 / 0% Rep Power: 7	coil negative is the tachometer wire, i don't know what's going on with your distributor but that wire is supposed to the gauge cluster harness. i would need more details about your wiring to know exactly what you're trying to do. and is the wire cut or just missing all together. is this a new distributor, or did it come with the engine that you are putting in? if you haven't already i would open up the distributor and see what is going on.

11-11-2006, 05:47 PM	#6
Dr Tweak Member Join Date: Nov 2006 Posts: 42 iTrader: 0 / 0% Rep Power: 7	Okay, let's see if this helps out. Here is the distributor on the H22 engine. You can see that I used the plug from the Civic, and I swapped the power wire (black/yellow) over to the Civic plug (which had 8 pins filled, all of the pins matched except for the power wire on the H22 distributor which was on a large two-pin connector). You can see the blue "engine speed output" wire isn't attached to anything, and there doesn't seem to be one on the Civic harness. Here are the plugs from the H22, you can see that only 7 pins on the 8-pin connector are used (the 8th one being the black/yellow power wire which is on the large two-pin connector), and then the blue wire on the large two-pin connector which is the "engine speed output" wire. And here is the Civic distributor, the only difference being that I have stolen the pin for the coil power wire from the 8-pin connector: Again, I have the blue "engine speed output" wire on the H22 distributor, I just need to figure out where to attach it on the Civic harness. Thanks for the help! -Doc

11-18-2006, 04:14 PM	#7
Dr Tweak Member Join Date: Nov 2006 Posts: 42 iTrader: 0 / 0% Rep Power: 7	I think I figured it out. This car didn't come with a tach stock, so they don't have the wire in the harness. Am I right?

11-18-2006, 04:47 PM	#8
hb91 Junior Member Join Date: Aug 2006 Posts: 10 iTrader: 0 / 0% Rep Power: 7	sorry i haven't replied i haven't checked my mail in awhile. if it didn't that would be strange. it would cost honda a lot more to make two different harness' than it would to just reuse the same one and put in a different cluster. are you putting a tach cluster in it or an external tach? i'm still a little confused as to what goal you're trying to achieve.

11-18-2006, 04:52 PM	#9
Dr Tweak Member Join Date: Nov 2006 Posts: 42 iTrader: 0 / 0% Rep Power: 7	Yeah that's exactly what I was thinking, but I never located a tach wire on the stock Civic harness, and there is no stock tach. The customer already installed an aftermarket tach, which I hooked up to the blue wire and it works perfectly. The swap is complete. -Doc

11-18-2006, 11:56 PM	#10
hb91 Junior Member Join Date: Aug 2006 Posts: 10 iTrader: 0 / 0% Rep Power: 7	if that is the case then i would leave it be.

11-19-2006, 12:02 AM	#11
Dr Tweak Member Join Date: Nov 2006 Posts: 42 iTrader: 0 / 0% Rep Power: 7	Oh no doubt, it's no longer at my shop. I was just following up on the thread. Thanks very much for trying to help out. -Doc

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05-06-2008, 10:57 AM	#12
erdalh22 Junior Member Join Date: Aug 2007 Posts: 2 iTrader: 0 / 0% Rep Power: 0	hi, I have swapped 93 h22 on 99 civic. and I have the same problem.. is anybody using stock tach? my tach is working wrong is anybody solve this problem

05-07-2008, 10:31 PM	#13
Dr Tweak Member Join Date: Nov 2006 Posts: 42 iTrader: 0 / 0% Rep Power: 7	Actually I figured out the problem was that the Civic I was working on didn't have a stock tach, so the wire didn't exist. In your case, you do have a stock tach so it's a different situation. I don't know what's going on with yours, but I do carry tach adapters that you can use to calibrate the signal, they are $75 plus shipping. My email is drtweak@phoenixtuning.com -Doc

05-07-2008, 10:56 PM	#17
Dr Tweak Member Join Date: Nov 2006 Posts: 42 iTrader: 0 / 0% Rep Power: 7	Honestly I have no idea, he said his tach was reading but not correctly, and I use this tach adapter to fix that problem on swaps like when we put 2JZGTEs into 240SX cars, so that's all I had to suggest -Doc

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H22 / '99 Civic - Mystery of the missing RPM Output Wire