safe undercoating that will not damage wiring hardness floor plugs etc

I am looking for some feed back from guys that know the brand they used and has had product on truck for 3-4 year to report back how well the rubbers

OEM FREIGHTLINER WIRING HARNESS , AFTER TREATMENT ,1US,ISX,EPA10

What You Need to Know about Undercoating During Auto Detailing

1 L x 3/4 D Adhesive lined dual wall 4:1 heat shrink sealing sleeve. 8-6 AWG 7 Cable Entry. Made from fire retardant PVC.

Wiring Harness Grommet Firewall Boot with sealing sleeve 7 Cable Entry 3/8 ID

MULTI-PURPOSE UNDERCOATING may be applied to cars, truck and recreational vehicles SOUND DEADENING PROPERTIES help reduce road noise ASPHALT-BASED

3M Professional Grade Rubberized Undercoating, Corrosion, Water and Salt Spray Resistant, 03584, 16 oz. Aerosol

No strong odor. Non Drip Formula Woolwax stays wet and is always active and creeping into inaccessible areas. Woolwax does not fully dry. Very Proudly

woolwax Lanolin Vehicle undercoating kit (4) Quarts w/PRO GUN & (2) extension wands. BLACK color

Undercoating: The Good, The Bad, and The Rusty

The 3M undercoating protects vulnerable automotive metal parts from corrosion and abrasion. Specifically designed for automotive undercarriages, wheel wells and body panels quarter panels, under hoods, trunks, undersides of floor pans it's equally effective in many other automotive applications. Multi-purpose aerosol undercoating is available in a rubberized formula that can be painted.

3M 08881 Undercoating - 16 oz.

Rust Encapsulator

Undercoating: The Good, The Bad, and The Rusty