2003 Silverado 2500 Diesel

Prestige APS620

2003 Chevy Silverado 2500HD Diesel.

I am using a DEI 1700g. Are these units hard to use? I dont see the tech sheet on directech.com.  Also i have the Prestige APS620 and it doesnt say anything about Diesel operation. Also how do i go about the tach? I know i have to tap into the glowplugs. Do i hook up the tach wire to the glowplug?

Gotcha ya on the tach wire. This is what im thinking, let me know if its wrong or if you would change anything.

I have an aux output: Pulsed Ground Output Before Start.

:...provides a 1sec 250mA pulsed ground output 1.5 secs before the RS unit activates as well as when the transmitter is used to disarm the system."

I figure hook this up the the Chevys dk blue wait to start wire?

Will this work

I just did one of these. You don't have to hook up to glow plugs or WTS wire. I would just set the programming to Diesel, instead of Gas, & have it wait 20 seconds to start. That's what I do on Audiovox units. But you can set it for 10 or 15 seconds also. I wouldn't go below 15 seconds in the North East or Midwest or Canada. It can get very cold up here.