[b3lha]

Originally Posted by svxistentialist

It worked precisely as you said. When I put on the Econ switch on the gear lever, it lights up the Power light AND the Econ light on the dashboard.

That's nice to know.

Originally Posted by svxistentialist

I'm presuming I have switched on Power mode, so I will remove the Econ bulb later, if I retain the JDM TCU.

Correct. The power light is on because the TCU is in power mode. The Econ light is on because it's wired directly to the switch.

I still have not solved the speed signal conundrum. I am still stuck in 1 range, and no speed showing on the speedo.

I don't recall the exact details of your problem. Will have to search for it.

I was thinking the other day that it might be possible to use a pair of headphones to check for the presence or absence of the speed sensor signal. The frequency of the signal should be in the audible range. It would produce a low tone which would become higher pitched as speed increases. But I wouldn't recommend trying it without running it past an electronics guru first. Maybe Trevor can advise.