Currently shipping QuarterHorses differ from the original in two subtle ways:
- There is a circuit to keep the QH’s memory using power from the Keep-Alive-Memory voltage supplied to the ECM with the key off. This should decrease the amount that the QH’s own battery is used in cars regularly driven.
- The BR2331A solder-on battery has been replaced with a socketed CR2032 removable battery. (commonly available)
This version of the QH is shipped without the battery installed. You should install it prior to use.
1. Open bags and unpack everything. You should have a loose battery along with a QuarterHorse module:
Quarterhorse and battery unpacked
2. Turn the battery so the “+” side is facing up. Slide it under the metal spring end of the battery holder.
First, slide the QH under the metal clip side of the battery holder
3. Push the battery gently downwards and toward the metal spring. The end of the battery opposite the metal spring should slide under the brown plastic retaining clip and lock into place.
4. Once installed, the brown plastic clip will hold the battery pretty tightly. Should you need to replace it, the easiest way to remove the battery is to gently pry on the metal clip with a small screwdriver until the battery clears the metal retaining clip and can be gently pulled out.