Electric – Power blocks

The ThunderBox comes in two versions—16 amp for $70 and 32 amp for $90. You can purchase it from HealTech’s corporate office in Hungary or a distributor in the US or 49 other countries.

There are two versions available:

one with a total capacity of 16 amps over four outputs (TB-U01) and

one with a capacity of 32 amps over eight outputs (TB-U02).

There are two connectors on the 16A version – one live and one earth – and four on the 32A (two of each) and they are very easy to use, though they do need accessory cables to have any pre-fitted terminals removed and wires stripped bare. Sprung-loaded clips hold the wiring in place, with banks of four live connections and four earth connections.

Both work on the same principle; the Thunderbox connects to the bike’s battery and remains ‘closed’, i.e. it does not send power to its outputs until it reads a voltage across the battery terminals of 14.4 volts, i.e. the engine is running and charging the battery.

When bike is turned off, the Thunderbox turns off the power when the voltage drops to around 12.35 volts.

Question:

There is a debate where to attach the “trigger cable” that some accessories, such fog lights, dash cams and some GPS units have.
Some suggested getting a Thunder Box or a Denali Power hub to regulate those devices. But that still leaves the dammed “trigger wire” .

Some devices like Denali lights won’t work unless the trigger wire is attached to a “live cable”. If so what would be the best place to splice to? The ignition or main light cables? could it handle several devices?? or is there a relay or power block that can be safely spliced and allow easy “trigger wire connections”.

Answer: Ok, have an update. Electrical devices such as Fog lights and some Dash cameras etc.. if their main cables brings the 3rd wire or better known as trigger wire or Switched Power wire. Is not recommended to use a power manager Like the Denali Power Hub or Thunderbox. Denali for example recommends ether installing a relay to handle the trigger wire. Then connect directly to the battery as it is the cleanest source of power. As long the trigger wire is connected to a Switched Power wire, there should be no issue with the battery losing power. Smaller items, like USB chargers and two wire devices, can be used safely with a power manager. Last for splicing wires, relays etc should be done by someone with a good understanding of the bikes electrical systems. The wrong cut or splice may damage the device or the bike.