I am hoping someone can help me. I have finally got around to installing the Ham board from Dynamic Crossfire solutions on my 7747 ecm. Fun I might add and I have it installed in the car and wow runs a lot better on new ecm. My question is, Now my aldl has stopped working and I think it might be jumping options on the Ham board but DCS has shut down so cant get wiring jumper info. Car is a 82 Crossfire Pace car that now has a 11.1 355 in it and I kept the Crossfire learned lots and made lots of changes. It would take pages to explain the build over the last 4 years but I need help with this one item A schematic for the DCS Ham board.

 

Try jumping terminals 1 & 2 together at JP3. That should output the stock TTL ALDL data stream.

RBob.

 

Thank you. I will give it a try this weekend.

 

I added the jumper and it works Thank You. Would you know what jp1 is for and I can see that jp3 if you jumper 2 and 3 you have rs232. Can you tall me the pin out for P1 I am assuming it is serial. However a pin out would be great and I can make a little board so I can switch between Aldl and serial.

 

JP1 selects between the EAC solenoid and IIRC, an IAT input?

As for getting serial out for the ALDL need to have the parts loaded onto the HAM board. Some have it while other don't.

RBob.