• 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 TR3a Dash Wiring

Share this page

here's a diagram from the owner's manual that shows two wires landing on the panel grounding terminal; one going to the control box ground and the other to one side of the wiper switch.
The number of wires is not critical. IIRC, I added a couple and looped them to other points where I wanted to improve the ground integrity.

diagram-gnd.jpg
 
On my TR3A the wiring diagram shows 3 wires on the grounding lug. So that's how I wired it up. A bit of a tight fit as I recall.

Tinkerman
 
I think, too, that there are ground wires that were omitted from the diagram for simplicity, e.g. the ground harness that goes to the speedo and tach.
 
Thanks for the replies. The car was in pieces when I bought it and it's hard to remember where everything goes. Here's another question. Where does the ground wire for the fan motor attach?
 
When I took my 3 apart, the heater fan ground wire was attached to the heater mounting bracket stud that went through the firewall. Since "Miss Moneypenny" came from the factory with a heater, I assumed that's where the ground wire belonged
Frank C.
 
Back
Top