I installed a simrad uw on my donzi and would like to get the analog tachometer guages to work alongside.

i am having trouble getting it to function.

would anyone be able to help me set up to work correctly?

I have attached a picture for reference

thanks!

Tach should be a simple setup, 12V, ground, illumination, and a signal wire coming from the ignition system or PCM.

I do not know if that would work for tachs I have attached a drawing how I’ve wired everything to nmea

thanks!

If it's a Smartcraft gauge, with a multi-pin deutsch connector on the back, then disregard prior post.

Is that J Box mercrury? They make an adapter harness that plugs into the j box and has analog gauge output wires

it is a j box

I believe what you are referring to is the agi? Attached

I have a like new tested converter box I would part with.

Learning

This is what I was thinking of, but you may need to run the agi box in addition.
https://www.greatlakesskipper.com/me...BoCHcUQAvD_BwE