WD40 is conductive, flamable, and it disloves plastics... including wire insulation and water valve bodies. ONLY use WD40 on mechanical parts, screws, hinges, etc. NEVER use it on timers, motors, wires, anything that would be BAD if it melted.

Is WD40 OK for electronics?

WD-40® Specialist® Electronics and Electrical Parts Cleaner will help you remove dirt, dust and oils from your sensitive electronics and connections. For your fast-moving motors, stuck switches, controls, and other long-lasting lubricant needs, use WD-40® Specialist® Spray & Stay Gel Lubricant. It won't run or drip.

Is WD40 a dielectric?

With a dielectric strength of 35KV, WD-40 can restore electrical connections, protect components from moisture and even rescue flooded equipment.