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I'm getting ready to install an ISSPRO turbo temp monitor and I would like to bounce my wiring decisions off bomber's who have done this already. I plan to tie into the LG/BK wire coming off the 10 amp fuse (#9). This supplys the +12vdc to the Automatic shut down relay and the fuel pump relay. Does that sound right or is there a better place?
I've installed mine 2 times, the first was on my 94 and it currently resides in my 02. Your wire ideas don't really sound familure, so I even pulled the schematic off the net, and I don't understand completely what you are trying to figure out.
But, here is how mine is setup:
Ign/Sw: is hooked directly up to the wire coming from the Keyswitch. this allows power to be supplied through the TTM to the ignition to keep the truck running. Sorry I don't remember what color the wire is, but I think its Blue, and if I remember correctly, its the larges one under the colum when its covers are pulled off.
Batt: Hooked up to the Battery. I had a micro-switch hooked up before, but I don't have one on this truck, its direct currently.
Lamp: Not Used
GND: Grounded to Chassis
T/C (-) Probe (red)
T/C (+) Probe (Yellow)
I don't know if this will help at all, but mine works!