Replacing a TranzXPST BL07 battery.

[sjpt]

The learning curve mists are clearing and I now have greater confidence of what kit I need and how it should fit together - so will be ordering soon.

There are lots of hidden mists (even big hidden fogs) after the initial ones clear. I suggest you post your proposed order here before actually ordering; one of the experts (not me) may well notice an issue or be able to suggest an improvement.

 

[Nealh]

Julet connector systems can be tested but not as straight forward as the sm/block connectors. One has to buy a pair of M/F julet tails of the correct pin out to make up a Y lead that termintes into a block strip, then insert the Y lead between the item to test. Probing the block strip is then easy, just not as convenient or straight forward initially as the older sm connectors.

 

[cyclebuddy]

I have a "supplementary" question regarding keeping the existing Tranz speed/power control and will send with some associated pics soon.

That looks like a DP15. It's unlikely to work with anything being recommended by others here. If it's in good condition I'd stick that on ebay - you'll likely get £40/50 for it from a Stow-e-way user whose own is knackered (new they're about £100).