My custom made S2000 AP1 conversion harness with install
I badly wanted an AP1 cluster into my EG hatch. I knew that this was not a very cheap ordeal, but I still wanted it anyways. I was ok with buying the cluster, Speedohealer, and Modifry unit. The salvage yard was unwilling to cut their S2000 dash harness to give me the pigtails. Another option was a custom plug in harness, but I wasn't really willing to pay $279. So, I decided to make my own custom harness for my conversion. This included sourcing New connectors, exact contacts, wiring, and proper tools. This whole process was somewhat of a hassle, but it turned out to be very rewarding. I also made a custom Carbon/Kevlar backing plate to hold my AP1 cluster. Here are some of the pictures that I have taken throughout this process. Please excuse the dust.
I used purple 22 gauge wiring just to make it look interesting. I used yellow wiring for the inputs that will need to be modified electronically. This include speedometer input, coolant temperature, and fuel. Everything was perfectly labeled so it would be a simple and strait forward install with quick connects. Using connects allowed me to not damage my original EG dash harness.


This is the connector with the yellow wires which indicate modified inputs

This is how I attached the AP1 cluster to the bezel

Speedohealer V4.....used

ECT Modifry

Installed pics:


Everything does work properly. I used many resources from Honda-tech.com and other websites to wire this up properly. Fortunately, everything that I have done is reversible if I choose to remove my cluster. Thanks for viewing.
I used purple 22 gauge wiring just to make it look interesting. I used yellow wiring for the inputs that will need to be modified electronically. This include speedometer input, coolant temperature, and fuel. Everything was perfectly labeled so it would be a simple and strait forward install with quick connects. Using connects allowed me to not damage my original EG dash harness.


This is the connector with the yellow wires which indicate modified inputs

This is how I attached the AP1 cluster to the bezel

Speedohealer V4.....used

ECT Modifry

Installed pics:


Everything does work properly. I used many resources from Honda-tech.com and other websites to wire this up properly. Fortunately, everything that I have done is reversible if I choose to remove my cluster. Thanks for viewing.
Last edited by forneyhatch; Nov 19, 2012 at 10:10 AM. Reason: Added one word to the title
I forgot to include the most important picture of the whole project!!!
This is a pic of the cluster in action before final assembly. I just started the car. You can notice that the coolant temperature is correct for a cold engine. I used the correct resistor to modify my fuel reading within 90%+ accuracy. The tachometer is also correct.
This is a pic of the cluster in action before final assembly. I just started the car. You can notice that the coolant temperature is correct for a cold engine. I used the correct resistor to modify my fuel reading within 90%+ accuracy. The tachometer is also correct.
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That DIY kit seems like a good deal until you have to assemble it. I may be wrong, but I'm assuming that they just sell the wires, connectors, and contacts seperately. A special crimping tool has to be used and its not available at your local home improvement store. Also, a level of precision and patience is needed to. Its actually a hassle to assemble connectors, contacts, and wires. Thanks
Thanks for your negative comment. I'd like to see you make carbon fiber/kevlar parts from scratch, haha. I made the kevlar backing plate a few months back, then I put the whole AP1 cluster project on the backburner. Finally, when I got all my parts in, I wanted to finish my project immediately and didn't wanna wait to make a carbon fiber backing plate. Also, I just wanted to make it look kinda different by experimenting with the carbon/kevlar mix. I plan on removing that horrible carbon fiber vinyl on the dash though.
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