• Hey Guest!
    British Car Forum has been supporting enthusiasts for over 25 years by providing a great place to share our love for British cars. You can support our efforts by upgrading your membership for less than the dues of most car clubs. There are some perks with a member upgrade!
    **Upgrade Now**
    (PS: Upgraded members don't see this banner, nor will you see the Google ads that appear on the site.)
Tips
Tips

TR2/3/3A TR3 Gearbox Top Cover OD Switch Locations

Share this page

T

Tropical TR

Jedi Hopeful
Silver
Country flag
Offline
Gentlemen,

I don't have my car at home to check and can't find a specific reference, so the more naïve question first. Do the TR3/3A non-OD gearbox top covers have pre-tapped holes for the OD switches, or just the raised areas where they should be located? Is there such a location for an optional reverse light switch? I understand the switches are all the same.

Regards,

Walter
 
Non-OD covers just have bosses where the switches would go (not drilled & tapped).

ODTop_zps94c20774.jpg


I have never added a reverse switch so cannot say for sure where that would go.
 
Thanks Geo, much appreciated! - Walter
 
It varies, some early ones do have 1, 2 or 3 holes drilled & tapped (with brass plugs). I'm not positive offhand, but I believe the third boss visible in Geo's photo above is where the reverse light switch would go. However, note that it needs to be fairly accurately located and may not be centered in the boss. It's also a somewhat unusual metric size.
 
I have two TR3 tranny's (both in the 59000's) that have the two bosses with brass plugs. So these were not overdrive trannys but they do have the brass plugs where the switches go. But only two plugs. The TR6 overdrive tranny I have does have the third switch and it is located where that third boss is on the top in the photo.
Charley
 
Thanks for this, Charley. I'm checking to see what I have, including the tranny number. My car is TR52910L so if the tranny is original, it should be in the same groups as yours, I think. No fun when the car is four states away!

Regards,

Walter
 
Back
Top