Article [13] ST1300 - FI Codes (MIL) Malfunction Indicator Lamp

@Igofar White Courtesy Phone consult: (Thank you Larry for your time and advice!)
Spark plugs tight, ensure no counterfeit!!
inspect coils; including grounds
No exhaust wrap! (PRO; insulates engine from exhaust pipe radiant heat; heat goes out tail pipe. CONS: causes condensation corrosion)
inspect knock sensor sub-harness
Turn off via kill switch, then ignition
3 bars idle down before ride
Replace Battery (2018)
Throttle Body sync. DONE
Check all wiring; especially grounds

I cleaned and dialectic greased coil mounts and low voltage coil connectors
I checked spark plugs, I overlooked during my general overhaul last year.

Manual calls for:
Stock: NGK CR7EH-9
(.031-.035)
Optional: NGK CR8EH-9
8-12k miles interval

Plugs installed by PO NGK CR9EH-9 (cooler for sustained high speed)
12K+ miles

I ordered set of NGK CR7EH-9

Spark Plug wires may be original (70k+ miles; 20 years); some sources say OEMs are inferior to what's now available.

Recommendations/sources welcome for replacement plug wires

UPDATE; I swapped knock sensors. Code 25 stays with harness?
 
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