Do these use the factory connector, or do I need new wiring?

These mount to factory electrical points — no rewiring or adapter harnesses required. Your existing mirror switches control heat and fold functions immediately after installation.

Will the heating element work right away, or does it need time to warm up?

Heating kicks in once the element draws power; it reaches full effect within a minute or two. Response time depends on ambient temperature and how much frost buildup you're clearing.

Can I return these if the power function doesn't work after installation?

Contact ModSupply directly with photos and details of the issue — we handle returns case-by-case. Test both mirrors before securing them permanently so you catch any DOA units right away.