Giving up on my megasquirt 2 v3 setup, I tried to wire using the diagram here, https://www.e30zone.net/e30wiki/images/7/75/2dhs0fn.png
I found pin 1 on the motronic connector which is farthest away from the cable.
Also using the universal wiring diagram for the megsaquirt. Followed the guide here https://www.diyautotune.com/support/...-your-bmw-e30/
And this guide https://www.e30zone.net/e30wiki/inde...rting_Your_M20
Any ground I run to the body from the db37 just creates a short and sparks. The main relay turns on when I plug the db37 connector in.
Tried running 12v power to pin 28 and pin 9 ground on db37 connector - no connection on the RS232 port can be made in Tuner Studio. No lights on the megasquirt.
Not sure if the MS is bad. I bought it second hand from what I was told came out of a running e36
Not sure whats going on, and I don't want to have to buy a megastim just to find out it's not working properly.
I'm pretty good with electronics and schematics. Spent the whole day wiring and making sure everything was right, so definitely bummed it didn't work out.
Not to mention, rats ate some of my harness in the dash. I figured I would at least get power to the MS, connect to it with PC and at least get a connection from one of the sensors.
I listed it for sale on ebay right now and just bought a speeduino 0.3.7 which has all the outputs labeled. which should make things a lot easier.
Just can't put my finger on why the multiple grounds on Megasquirt DB37 at 19,18,17 would spark/short out when touching chassis ground?
I found pin 1 on the motronic connector which is farthest away from the cable.
Also using the universal wiring diagram for the megsaquirt. Followed the guide here https://www.diyautotune.com/support/...-your-bmw-e30/
And this guide https://www.e30zone.net/e30wiki/inde...rting_Your_M20
Any ground I run to the body from the db37 just creates a short and sparks. The main relay turns on when I plug the db37 connector in.
Tried running 12v power to pin 28 and pin 9 ground on db37 connector - no connection on the RS232 port can be made in Tuner Studio. No lights on the megasquirt.
Not sure if the MS is bad. I bought it second hand from what I was told came out of a running e36
Not sure whats going on, and I don't want to have to buy a megastim just to find out it's not working properly.
I'm pretty good with electronics and schematics. Spent the whole day wiring and making sure everything was right, so definitely bummed it didn't work out.
Not to mention, rats ate some of my harness in the dash. I figured I would at least get power to the MS, connect to it with PC and at least get a connection from one of the sensors.
I listed it for sale on ebay right now and just bought a speeduino 0.3.7 which has all the outputs labeled. which should make things a lot easier.
Just can't put my finger on why the multiple grounds on Megasquirt DB37 at 19,18,17 would spark/short out when touching chassis ground?
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