It's best to put together the OBD2 port and Mlex connector first before installing them into the case, with a little slack in the wires so they sit low and out of the way. I'll give some generic how-to and diagrams/pinouts and then if you have any specific questions feel free to contact me at the address above. I won't go into too much depth on the instructions because it's pretty self explanatory and may change depending on what ECUs you're targeting and how you power it, etc. You can make a CAN terminator easily with a 120 ohm resistor, one male Molex connector, and 2 male terminals. Scrap wire, heat shrink, wire wrapping of your choice, etc. Molex PN 39-00-0080ġ6x Molex Mini-fit, Jr Male terminals. Molex PN 39-01-3083Ĩx Molex Mini-fit, Jr Female terminals. If you want to make a splitter for multiple modules:Ģx 4x2 8 position Molex Mini-Fit, Jr Male Plugs. I just either buy them with 8" or so of wire harness attached at the junkyard or keep them with ECUs I buy. Heat shrink, zip ties, wire covering of choice (I like the braided covering) if desired.ĮCU connector. Up to 6x Molex Mini-fit, Jr Female terminals. This is a basic list of what I use to build the main unit, but you can customize, modify, and upgrade/downgrade as needed.ġx 4x2 8 position Molex Mini-Fit, Jr Female Plug. Īlternatively you can use something like this decent adjustable linear power supply in conjunction with banana clips to a 5.5x2.5mm plug. Power Supply: This 12v 3amp one works well for most ECMs I've tried and is cheap. I recommend decent sized wire for the main power and ground stuff depending on how many modules you'll run at the same time. Scrap wire, heat-shrink, solder (if necessary), etc. Molex PN 3901-2081Ħx Molex Mini-fit, Jr male terminals. Here's an example: ġx 4x2 8 position Molex Mini-fit, Jr Male plug with mounting ears. Alternatively you can just run wires out the hole and connect it however. ġ1mm diameter mount hole power input (barrel plug or whatever you want. You'll be removing the insulation so just about anything works. You can also direct solder to the switch terminals if you're pretty decent at soldering and don't melt the switches.
Here's one I've had success with: Ħx Flag terminals - You can use either the 22-16 or 14-16 Gauge depending on your wire size and method of wiring inside. Cut 4-5" of wire off with it.Ģx Switches - Amazon - Many different options, just needs to be this style. I usually pull them from mid-00s GM cars, as they have all of the wires I want already ready to go.
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