Astrostart 5204, 2006 Silverado Duramax

I just installed a 5204 Astrostart in my 2006 Silverado Duramax and it seems to be working correct.

My questions are:

-    When the "Wait to Start" light is on for the glow plugs is it a + or - signal on my truck?

-    And second I'm trying to hook up a Directed  556T timer to the Astrostart 5204 P10 connection. The timer module sends a (-) signal to the starter, but the installation manual from Astrostart does not give a wiring diragram for the connections to the P10 connector.   Can somebody help me through this?

Thanks

You do not need the DEI part.........set your unit for NEG(-) glow plug found behind the cluster. DK.blue.,

Don't mix DEI crap.....with astro...good stuff..........K..!

For this truck you do NOT need the P-10 connector

I do need the P10 plug if I want to hook up the timer.

I am out of range with the remote start and want it to start with the timer I have. Does anybody know the wiring pinout of the P10 plug on a Astrostart 5204.

Thanks

I see....use the astro RST-2...and just plug it in!

to use the DEI piece, youll need astro part # 310-903-271-01 its the harness that plugs into the p10 The pin is the #4 that gets the neg trigger (left to right)

Look at page 21 of the install manual