Was the temperature at the normal position? Have you checked for a blocked air vent in the petrol cap perhaps?

It does in mine! Certainly all the critical ones, listed on the diagrams in both measurements, also tightening sequence if relevant.

As per mail try a Google search https://www.google.com/search?q=mazda+b ... bda+sensor for suitable sensors perhaps?

Ah ha I'm in!

Problems logging in its asking me to "Verify that I am Human" but nothing to click or select ..... details are correct as of 10th March email.

Are you sure on that name? There is Bongo Spares, but I don't recall a Bongo Parts company?

Yes thats where they should have come from.

OK well the Blue wire into the old fuse box picks up on the +12v from the battery (upper connector) - this is NOT normally how it would be wired, it should be plugged into the lower of the two connectors as this then runs to the Radio and Sockets and other ancillary circuits, this way the LB powers ...

Yes my records for both vans sometimes show Miles others Km because who ever read it forgot that it actually records in Kms and just ticked the Miles box when they filled in the paperwork!

Great news, lets hope you can lay your hands on one!

The favourite one for Bongo's was the Waeco MS 50 Cruise Control however they haven't been available for quite sometime, I think occasionally they used to pop-up on eBay but not seen one for a while now.

The part numbers are listed here https://lushprojects.com/bongopartsmk2/code=6115A&cat=a2ajra0a&vin=&imgno=02of02.html#12 however no wattage is specified but it will be quite a low wattage possibly 1.2 Watt as its internal and you don't want a lot of heat being generated inside the rest of the unit.

I have the gearbox manual and normally, depends on version, you can replace either the group of solenoids or individual solenoids.
You will need to read the manual to locate section etc. but has some very helpful diagrams for the solenoids;
http://www.g8dhe.net/bongo_images/Gearbox/RC4AEL.pdf

It could be an earthing fault on the wire going to the lamp, or a fault inside the alternator, not able to give much more advice as its a rather simple circuit! +12v - to lamp - to alternator and switching to earth.

The charge light is controlled directly by the alternator, it provides an earth once the alternator is running and operating see diagram below;
Screenshot 2026-03-16 084401.jpg The light is driven from the connection off page far right
Hence it might be worth checking further with the alternator ...