[frodus]

Bottom of the page:
http://hpevs.com/catalog-ac-50-26-28.htm

Shows how to connect an opto isolator to the 1238 controller, pin 2

Opto's aren't that expensive, so it shouldn't be that much, but you'd need to rent/buy a programmer to set it correctly for your tach.

[ricklearned]

Originally Posted by frodus

Bottom of the page:
http://hpevs.com/catalog-ac-50-26-28.htm

Opto's aren't that expensive, so it shouldn't be that much, but you'd need to rent/buy a programmer to set it correctly for your tach.

Just to clarify, the programmer is to program the Curtis to the pulses needed by the tachometer, correct?

[frodus]

Yes, you have to set some parameters inside the 1238 to get the Tach working correctly. On cars, the tachometers are usually set to listen to pulses on a 4,6,8 cylinder vehicle so they're all different.

[ricklearned]

Originally Posted by mcbrems

...... They will be selling the modules and harness to connect it to the tach in about a month, they say.

Cheers
McB

That was in June. Any updates?

[frodus]

I'm checking now. I've been out of town for a bit and forgot to check in. Will post an update.

[frodus]

I got pricing and availability so they're available to order through me. Single channel opto-isolators are $50 plus shipping. I'll be updating my website today to include these optional devices.

[albo2]

Originally Posted by frodus

Bottom of the page:
http://hpevs.com/catalog-ac-50-26-28.htm

Shows how to connect an opto isolator to the 1238 controller, pin 2

Opto's aren't that expensive, so it shouldn't be that much, but you'd need to rent/buy a programmer to set it correctly for your tach.

Thanks for the info, it looks like it is set up by default for a 4 cyl, which I would imagine all AC50 conversions would be, I have the tach running on the serial data stream but will give this a go doesn't sound too difficult.