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Articles: Electrical & Wiring

Member-submitted articles related to DSM electrical and wiring.
Hello fellow DSM folks. I wanted to post this thread to show how to wire the horn with an aftermarket steering wheel without getting the wires all tangled up inside the hub. Hope this helps other people out with the photos and video I took!Tools needed : -18 AWG stranded Wire -Heat Shrink (optional) -Heat Gun (optional) -Wire strippers & crimpers or solder gun (whatever you prefer) -Butt Connectors -Ring Terminals -Female pin terminal (get the ones with a rubber protection on it, so if it touches anything the horn won’t go off) -Hose clamp1. Remove the steering wheel (optional) (find it easier with it off since it’s not in the way)2. Remove the steering column. (2 or 3 screws underneath the column.)3. Find your horn connector...
1G N/T throttle bodies have a larger bore than 2G throttle bodies. The difficulty in swapping these into a 2G is that the 1G TB uses a 3-wire TPS with a separate idle switch, while the 2G uses a 4-wire TPS with the ECU performing the idle switch commands.The 1G electrical idle switch [edited for accuracy] senses when the throttle plate closes telling the ECU to increase the idle speed under certain engine loads, including AC on, but it also is used when the driver lifts off the throttle completely, preventing the engine from suddenly air starving and abruptly slowing down the car.The 2G has this function built into the TPS, taking the input from the 4th wire of the TPS and signaling the ECU to activate the ICS motor to compensate...
In this guide I will be describing how I replaced the MPI relay for a 1990 Eclipse GSX with 3 Bosch-style relays. This approach is useful if you had a MPI relay go out and you don't want to pay over $100 for a new one or if you are worried about sourcing one of these units in time for a track-side repair. Keep in mind that at the end of the day it's probably still quicker/easier to just buy a new MPI relay but as these get harder to find I like the idea of having an alternative strategy.Disclaimers:This has not been tested very extensively. I put this in my car and it started/idled as it should which makes me feel pretty confident that this works. However, in testing this I determined that the rest of my wiring harness was too far...
Greetings from Europe!While trying to diagnose my cruise control not working, I found out that my speed sensor signal is absent. I was looking for some information online on how to fix it and the only answer I found was - just replace the whole gauge-cluster. Well, as you might imagine, these cars are getting more and more rare, so "just go find in junkyard" option might not always be available.In this article I will guide you through how to test and fix speed sensor in 1g Eclipse for only 3 bucks and 30min of your time.The easiest way to test if your speed sensor works without disassembling any of the interior is C-65 connector right next to left driver's foot. We are looking for yellow-white pin 11.Connect your multimeter...
In this thread Ill show you how to install a vac pump. The reason you would do this is to help launches when your brakes cant hold you back. While sitting at the line with boost, there is no vacuum going to the booster. This is mainly for people with a auto trans.You will need wire, wire strippers, crimpers, relay, hose, check valve, and the pump. You need find where you want to mount your pump. This is the pump I got.You need to remove the hose at the brake booster. You need to put a T in this line. On the remaining two ports, one goes to the booster and the other is going to the pump. In the line going to the pump is where you need a check valve put in place. Remember the pump is providing vacuum.Next you need to cut...
So you want to ditch your 30 year old coils and plug wires for something cleaner, but don't want the issues that come with running 300m coils in wasted spark, or the problematic CDI's that tie in with the 300m COP.The EVO community has been using Denso coils for COP with great success in 800+ hp setups with no CDI required. They're a cheap, reliable and comparatitvely powerful coil to the stock DSM coils, however these can eliminate the factory ignition control module, factory coil packs, and the spark plug wires all in one.If you're looking for an ignition improvement over the factory DSM coil packs, chances are these are not going to improve over good OEM coils.There are a few guys that have been successfully running these in...
Little break down on why and how i got to this stage. My cars in the UK so we are similer to EU rules and regs so we have only Amber indicators in the rear but when the car was imported so many years ago they rewired some bits took some wires out for the rear and it needed tidying up.So I lost the 4 rear bulbs that are USA regs for brake and indicator, the front wings get side markers and the bumper marker was an indicator. When i recently redid the wiring to get rid of old wires and clean it up i ditched a few bulbs as i dont need them no more and this caused me some issues even before LED bulbs! I bought some LED bulbs that had build in resisters but clearly were not enough for the system and not able to compensate for it.The fix...
Since there are a few members that would like to know how a simple relay functions, I drew up this rough drawing to show just how a simple relay operates. I hope it helps out those that are "electrically challenged". Marty
Just about every thread that you search will tell you to get bulb 74 for your little Toshiba V-2 sockets for your gauge cluster.This is not the correct bulb size. Do not waste your time buying the 74 bulb.A 74 bulb will fit VERY tightly into the socket, so tight that it will expand/swell the socket to the point that you can't even reinstall it back into the cluster. You could theoretically expand the hole in the gauge cluster or dremel the Toshiba V-2 socket so that there is less material, but why even bother with that when you can get the correct bulb in the first place.If you need to replace a gauge cluster bulb, make sure you purchase the 2723 bulb. This bulb fits perfectly into the Toshiba V-2 socket and installs just like the...
I'm going to show you how to hard-wire your SD kit and Flex Fuel sensors instead of using an adapter harness for those either redoing their engine harness or you simply don't have the funds for the adapter harness.There was very little information on MAF wiring that I could find but maybe I wasn't using the right keywords.. Regardless, here's credit to this thread for having what I needed: https://www.dsmtuners.com/threads/2g-maft-wiring-diagram-very-simple.442096/ After reviewing that thread, I then traced all the MAF wires across my harness to confirm where they went. There is a diagram that includes the ECU pin #'s a few pictures down if you're making a new harness. My car is a 98 GSX- your wire colors may vary but the positions of...
I see more EVO 1, 2, 3 in North America lately. The engine and drivetrain are very similar to DSM/GVR4, so I think there is no problem to find info for repairs, but I see some people are struggling with electrical issues because of a lack of info. It seems there is not many FSM shared on the internet or I'm not sure if they even exist in English.I have the factory electrical circuit diagrams. But those are paper books and in Japanese. I decided to make it as a PDF file little by little while staying home due to the covid-19 mess, but I would take long to complete since I need to translate from Japanese to English. So if there is someone who really needs some diagram as soon as possible, just let me know. I would take a pic of the...
I started a thread on an electrical issue i was having. And came across lots of 2g 95-96, 97-99 wiring information. But it was across many threads and websites. so i would like to put it all in one place for everybody!This is what i have so far!!!I would like this thread to contain as much electrical as possible for the 2g dsm both 95-96, 97-99 eclipse gst, gsxplease add any and all wiring information or labeled diagrams/pictures you can to this post. if you have a better quality image then someone else please add to the thread. Thanks!-how to post:year of 2g (ex. 95-96, 97-99) short description of what your posting automatic/manual transmission (if known)95-96 2g factory electrical service manual97-99 2g turbo factory...
Original Author Richard Montalvo - FacebookPosted here to save the information and make it searchable."Here are total costs associated with this upgrade I just did. - Bosch Throttle body $150 (Amazon) - Billet throttle body flange $90 - Bosch wiring plug $12 - Pedal from a 4G eclipse $15 (Junkyard) - Vibrant cast elbow $35 (local shop) - Torque Solution clamp $85 - Fab work, piping & Labor $200 - Tuner adjusting the Haltech $125 : $712 no tax.Now take into consideration that I did the fab work and welding myself, but I would charge someone $200 to do all this fab work if they brought me their car. Other people may charge less or more. These are straight costs for how I did it. You can save money by not using a cast elbow and...
This article is meant to serve as a general guide to get the horn to work with an Nrg short hub or aftermarket steering wheel. Credit goes to this particular article for the idea of using a hose clamp: https://www.dsmtuners.com/threads/how-to-get-your-horn-working-with-an-aftermarket-steering-wheel-using-a-clamp.373149/ Also take note of the picture from this article to see a hacksaw blade used instead of a hose clamp: https://www.dsmtuners.com/threads/cruise-control-switch-relocation-and-horn-connection-with-aftermarket-steering-wheel.222394/ ********Note: I will not be going over srs light or how to maintain airbags Useful Videos: -For disassembly//assembly of nrg setup wheel-To understand the general concept of how the horn works...
So, while I had the headlights out of my 92 Talon for the FMIC install, I had decided to do an LED bulb conversion. No site really listed bulbs that would work and it took a little bit of customization to get them to fit, but it wasn't hard. Follow along and I will try to make it simple. LED bulbs for a 1gb are 9005 and 9006 LED bulbs for the headlights and 880 LED bulbs for our fog lights. The fog light replacement is simple, just remove and replace with the LED bulbs. Our original headlight bulbs used halogen, I believe, that uses a metal strap to hold them into our housings. I had to remove the metal straps completely so the new LED's would seat (they have an oring on them to seal out moisture). After removing the strap, you need to...
Part 2 of the pictures for wiring a Dynakek ARC-2 box to a 1990 DSM using the 1990 stock connectors for plug and play status!For the beginning of this thread go here ----> https://www.dsmtuners.com/threads/arc2-box-plug-and-play-in-a-1990-dsm-part1.524945/Here are the rest of my pictures from the install.
Wiring an Dynatek ARC-2 box to a 1990 DSMI have had a few members ask about how to wire in the ARC-2 box to our bastard 1990 year DSM's so I tried to take a lot of pictures and put together an article that can help and DOES work, including your tach.Wiring colors to use an ARC-2 box in a 1990, using 4 pin plugs to match the 1990 harness for plug and play operation. The 4 pin connectors can be bought at Sheridan Engineering’s connector section. You may be able to source the plugs elsewhere but that is where I got all of mine. If you do this and the box ever gives you trouble, you can just unplug the box and plug back into the coils to get you to your destination.When doing this conversion, you will be changing the stock ARC-2 3 pin...
After doing much research, I wasn’t able to find much information on wiring 300m coils in parallel, all the DIYs are in series (wasted spark). I’m not going to go into details on why you would wire it in parallel vs series, but here is how it’s done.Wire all the lower pins of the coils together to the single pin side of the blue divider on the triangle plug. (#1 on the diagram) Wire the top pin of coils 1&4 together to #3 on the triangle plug. Wire the top pin of coils 2&3 together to #2 on the triangle plug.Due to the many different combinations (1g/2g, 6 bolt/7 bolt, ecu year, 1g cas in 2g, etc) If you complete this wiring harness and your car will not start, simply switch wires 2&3 on the triangle plug (this will reverse...
Sometimes modifications come with unintended consequences, or, at the very least, cause more work to be done for a correctly functioning car.Along with the LED taillight center section mod, we decided to tint the reverse lights a little darker, to draw less attention to them. The look was right.Well, as all of us know, the reverse lights aren't all that bright to start with, so it was basically like having no lighting help back there at all after the tinting. And DSMs don't have the best rear visibility to start with, especially the Spyders.Just install brighter bulbs, right? Turns out that some LED bulbs have an elongated shape that makes them not fit into a standard housing, preventing the lens from being reattached.We...
To be clear, I’m not an electrician. Just a weekend warrior. So my blower motor stopped working and this is how I went about diagnosing it and I’m not 100% sure if it’s the correct way. Remove the glove box and you’ll see the blower motor connector in red.The yellow is your relay that’s secured by a screw you cant see that holds a c clamp around the relay.I used a test light to check for power at the blower connector with the key on and blower on. Wasn’t getting power so for now I can rule out the motor. When switching the fan speed you should here the relay click. I tested power there and it only came on on one wire when switching from speed 3-4 only. Idk if that’s normal. So I removed the resistor. It’s a pain to remove...
My radio kept cutting in and out. I didn’t see any write ups about this. Noticed it was fuse contact related. Wiggles the fuse and radio would cut in and out. To tackle this, you’ll need to be on your back under the steering wheel and be patient.Previous owner must have had the fuse in and out a billion times.Begin by disconnecting all the connectors on the front side of the block.The yellow connector on the top is a pain to remove with the block secure so remove it when you remove the block. Also when reinstalling, connect that same connector before you secure the block.Now that everything is off the front except for the yellow connector, time to remove the block. Remove the. 10mm bolt at the bottom and slide it off the...
First is to make sure you have slack because the engine likes to move in all sorts of directions and wires expand and contract with temperature. Then I like to strip the wires about a half inch from the ends. Don’t twist them up yet! Get your other end and push the frayed ends into each other then twist them together! Oh and before this step put shrink tube on the wire. Or you can use electrical tape but it’s ugly and will unravel over time. After twisting them together, use your soldering iron to heat the wire ends up and add solder! Now cover with shrink tube and shrink it with heat. Now you have a proper good looking connection.
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