BennyK

So - I've had a bit of  time to tinker and by way of a test replaced the wiring which would normally go through the gear lever so it can be operated from the dash. I've also fitted an illuminated on/off switch. With the ignition on and the switch on if you work through the gears the switch illuminates when 3rd and 4th are selected. But still no working overdrive on the road. Can I assume from this that the switch and that replaced length of wiring are OK and that the problem lies elsewhere?

How do you do that?

Ok , so this is getting strange. Took the car out for a run now with the wiring and switch  taken out of the gear lever and o/d 4th is fine, just can't it to work in o/d 3rd. Any ideas - surely if the switch and the wiring to it switches in and out OK then you should be able to get o/d in both 3rd and 4th?

Hi, I've recently purchased a GT6 with J Type overdrive fitted and i'm new to classic car ownership. It's just come back from the garage after an MOT and I've noticed the overdrive only works very occasionally and only when  in 3rd. When I collected the car from the MOT the OD switch was left "in". Presumably the garage drove the car in reverse at some point. Can this harm the OD unit if the switch is left in this position? Another worry I have is that there's quite a lot of white smoke/steam coming out of the exhaust even when the car has been run at working temp. for a while. Is this normal during cold weather , or does it indicate a problem? Many thanks, Benny