CPR wiring help!!!

Hondata CPR (Coil Pack Retrofit) support
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Greg Amy
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CPR wiring help!!!

Post by Greg Amy » Sun May 27, 2012 2:17 pm

Camping onto this topic for a non-related wiring question (instead of starting a new topic).

I'm planning the CPR install for my '95 Integra GS-R, B18C1. In reviewing the instructions I see I've got harness Variation B, with Green and Yellow wires for the engine compartment distributor connections.

As I understand it, the coil and ignitor can be completely removed from the disty; correct? If so, then per the FSM the two wires on the lower plug to the disty, black/yellow and blue, will apparently be going to nothing inside the disty. I think these are the two wires that must be connected to the green/yellow wires on the CPR harness.

If these assumptions above are all correct, is there any reason I cannot simply cut off the socket of this lower connector from the distributor and use that as a pigtail to connect to the CPR harness? It would make the installation cleaner, waterproof, and easily removed for subsequent engine removal. It's a race car, I'm not worried about putting it back to stock ignition.

What are folks doing with the internal wires that used to go to the coil and ignitor? Cutting them? Taping them off and stuffing them inside? I want to ensure they stay clear of the shaft/gears/Hall Effect sensor.

Greg

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Spunkster
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Re: CPR wiring help!!!

Post by Spunkster » Tue May 29, 2012 10:16 am

Yes you can wire it like that if you wish, but it is always best to test your wiring before making it final to avaoid making irreversible changes.

Greg Amy
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Re: CPR wiring help!!!

Post by Greg Amy » Tue May 29, 2012 12:43 pm

Thanks for the follow up! Once I've verified it all works I'm likely to trim off all the internal wiring that used to go to the igniter and coil (black/yellow, blue, and yellow/green) to keep it clear of the rotating parts.

Side note for future reference: on my '95 DC2 Integra chassis, the yellow/green ICM (DIST) wire is ECM pin A21, not A22 as noted in the instructions.

Greg

Greg Amy
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Re: CPR wiring help!!!

Post by Greg Amy » Fri Jun 01, 2012 6:01 am

Wired in per instructions, fired right up. Nice piece of kit.

One last question. As described above, I'm going to cut off the external coil/igniter pigtail from the disty and splice it into the CPR harness (I'm also going to trim off all the internal coil/igniter wires). However, the black/yellow wire on that external plug going into the disty is a smaller gage than the CPR harness, significantly smaller than the one going to the engine compartment harness. Is there a minimum gage needed for this black/yel wire to sufficiently supply power to the CPR?

Thanks for the help, nice product.

Greg

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Hondata
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Re: CPR wiring help!!!

Post by Hondata » Fri Jun 01, 2012 7:33 am

That wire supplies power to the coils, not the CPR. Normally it is quite thick.
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Greg Amy
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Re: CPR wiring help!!!

Post by Greg Amy » Fri Jun 01, 2012 8:16 am

Hondata wrote:That wire supplies power to the coils, not the CPR. Normally it is quite thick.
Right. Note above I wrote the wire going into the stock engine compartment harness is large (call it 8 gage?) yet the wire on the other side of that same factory plug, the side going into the distributor to the stock internal coil, is much smaller (call it 12 gage?). The yellow wire on the Hondata CPR harness is between the two, call it 10 gage.

So what's the minimum "quite thick" needed for that black/yellow wire to power the CPR coils?

GA

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Re: CPR wiring help!!!

Post by Hondata » Fri Jun 01, 2012 8:43 am

10 or 12 gauge are plenty thick enough.
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Greg Amy
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Re: CPR wiring help!!!

Post by Greg Amy » Sat Jun 02, 2012 5:10 am

Thanks!

Again, nice product, well done.

GA

Muckman
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Re: CPR wiring help!!!

Post by Muckman » Sun Jun 23, 2013 3:45 pm

I need confirmation on the CPR orange wire - Does it go into OBD1 A21 or A22?
Instructions say A22 but A22 is empty on my OBD2b to OBD1 adapter harness.
I traced OBD2b B13 (ICM) wire to OBD1 A21.
Does CPR orange go to A21 or should I depin A21 and put orange wire into A22?
Integra GSR 13.5:1 GT30R 597hp
Evo9 MR SE

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Spunkster
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Re: CPR wiring help!!!

Post by Spunkster » Mon Jun 24, 2013 10:25 am

Both spots do the same thing, so either will work.

ben
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Re: CPR wiring help!!!

Post by ben » Tue Jul 09, 2013 3:28 pm

Ran into the same situation with A21 vs. A22 for an OBD-1 ECU.

Image
Spunkster wrote:Both spots do the same thing, so either will work.
If they both do the same thing, can I just leave A21 untouched and just pin the orange (or ylw/red for B variant) into A22?

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Re: CPR wiring help!!!

Post by Spunkster » Tue Jul 09, 2013 4:05 pm

Whatever pin either A22 or A21 needs to be depinned so that it is no longer connected to the ignitor.

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Re: CPR wiring help!!!

Post by ben » Tue Jul 09, 2013 9:59 pm

I'll have to go back and depin A21 then.

It does seem to run okay even with both of them connected.

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