timothy9x

Just a question if anyone has a write up or video on swapping out a factory manual W58 SC300. I'm ordering one from Grannas Racing and I'm kind of confused about the index plate and specifically the wiring. I get the feeling the wiring is different on manual SCs vs automatic SCs. I'm new to this forum but my Google searches keeps pointing me to auto to manual swap on SCs, Supras, and IS.

bron_karr

The only two things I can think of wiring-wise would be the reverse light wiring and the speedometer wiring. I'm not sure how you want to do the speedometer wiring, but a lot of people use a gps speedometer for these types of swaps. The two reverse wires should be pretty easy to spot and complete a loop to trigger the reverse lights.

timothy9x

Oh I wanted to solder the wires to keep everything neat. I don't know how I'd go about GPS speedometers for this swap and probably wouldn't as I'd imagine I would need a secondary display to show my speed. I just want the the OEM clusters to work. I know the Grannas kit will include the wiring harness that's bluetooth. I suppose I'll have to start by figuring out the reverse and speed wiring diagram first.

stheodore

I have had two of the Grannas Racing kits (but on IS300s). There is a conversion harness supplied that allows you to use Bluetooth to calibrate your speedometer. It's actually pretty trick as you can account for gearing changes and tire size changes. I assume the same type of harness is used for the SC, but am not 100% sure.