Back Up Alert Recommendation for Vehicles Without 1156 or 3156 Bulbs  

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Expert Reply:

For replacement bulbs that also have a built-in back up alarm, we only have 2 options. One fits in place of a 1156 bulb, # HM20100VA, and the other fits in place of a 3156 bulb, # HM20101VA. You can actually use a 3156 in a 3157 socket. The only difference is that 3157 has a dual filament that 3156 does not have.

What I recommend is the surface mount alarm, # BK97DB. At 97 decibels, this alert can definitely be heard at the rear of the vehicle. installation is simple; the alert can mount to a flat surface at the back of the vehicle. You can even mount it out of sight. Wire the unit into the reverse light circuit behind one of the tail lights and it will turn on when the vehicle is in reverse.

expert reply by: Michael H

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