Thanks very much for that, will try it out this weekend.

Theo

Hi Paul - at present I simply have the w/r wire connected to the dash 2, I only looked into the circuitry after it didn't work properly. There is no light or fused link to 12v.

I've recently installed a dash 2 to my Nissan powered BMW E30 and one of the few teething problems I'm experiencing relates to the alternator light of all things. The original alternator no charge light works by a voltage difference between a separate alternator terminal & 12v at the battery. Wh...

10k pull up resistor to 5v worked nicely, thanks again for the replies.

Thanks for the replies, after a little more research I found someone else trying to do the same thing and they had success with a 10k resistor so I will try this first and move on to a 1k if the result isn't satisfactory.

Hello I am going to be fitting my Dash 2 (standalone, no DL) to my Nissan powered BMW and have most things figured out with the exception of the tachometer. The Nissan ECU outputs an open collector signal whereas (as I understand) the Dash 2 needs a 5 or 12v square wave input - would anyone be able ...