First Off, I've been looking at the red lightning bolt as a glow plug indicator.

Turns out it looks like a light bulb filament and is yellow not red.

Heres the PSA: Glow Plugs require the low-speed fan relay in the power distribution center (behind the drivers headlight) for operation. Initially, I didn't have that relay. All of this trouble starting a cold engine was with no glow plugs (in northern Ontario).

Now for the question, does your glow plug controller make a high pitched whining noise when it is engaged?

I believe it's solid-state. It shouldn't make any noise.
If mine does, I can't hear it.

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'06 Lbrty Sprt CRD 150K

Sasquatch
DSS Turbo
CAT-elimntr
Weeks Stg1&2 EGRfix
PV-200
BLING
vent gauges

IDParts
head
cams
rockers
Timing set
ARP studs
eTn1 GX2123 5v GPs

YETI Custom Tune
Flowmaster 8325508
Carter P76611M
GM 12611872
Hayden 2986
GM 15976889
PATC Custom Billet
2010 Ram Hemi Trans
Sonnax 44957
Transgo kit
Cooper 51770

The GP controller relay is behind the battery; it is NOT in the Power Distribution panel...
and, it should not make any noise, it is solid state!

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Supporting Vendor and Moderator of LOST
05 Jeep Liberty CRD Limited
Ironman Springs/Bilstein/Shocks
Yeti StgIV Hot Tune
Week's BatteryTray
No FCV/EGR
Samcos/ProVent
SunCoast/Transgo
Carter Intank-pmp
2mic.Sec.Fuel Filter
Flowmaster/NO CAT
V6Airbox/noVH
GM11 Bld.fan/HDClutch
IronrockArms/wwdieselMount
98 Dodge Cummins 24 Valve