• Hi Guest!
    If you appreciate British Car Forum and our 25 years of supporting British car enthusiasts with technical and anicdotal information, collected from our thousands of great members, please support us with a low-cost subscription. You can become a supporting member for less than the dues of most car clubs.

    There are some perks with a member upgrade!
    **Upgrade Now**
    (PS: Subscribers don't see this gawd-aweful banner
Tips
Tips

Reverse Switch Test

bash

Jedi Trainee
Country flag
Offline
It suddenly occurred to me to check my reverse light switch, and so I checked the resistance between the two contacts in and out of reverse - both showed high resistance. I unscrewed the switch and tried again pushing the plunger by hand, and again, I got a high resistance for both settings. I pulled the other switch (seatbelt related) and got the same result, which seems a bit odd - both switches failed? I am the first to admit that my electrical skills are lacking, so before I order a new switch I thought I would check with you guys!

Any thoughts? Am I testing the right way, or am I an idiot?

If both switches are bad, is there any reason to replace the seatbelt one (it's a '75 TR6)? I bought new seatbelts which don't have the sensors anyway, so I don't plan to hook up any seatbelt wiring, and I think it was only '74 cars with this switch required for the starter to operate, but as always I am prepared to be told I am wrong.

Cheers
Alistair
 
If Lucas made the switch, they did a great job. I seldom see a defective reverse switch on the TR6, even after 36 years of use and abuse. Do you read any thing from the contact to the switch housing when you toggle the switch? Heck it may be plastic and I am off track; not unusuall /ubbthreads/images/graemlins/laugh.gif
 
Hi, and thanks for the reply.

I get high resistance from either contact to the body of the switch too. I tried both switches and got the same result, which seems odd - identical failures on the two switches?

Any other thoughts?

Thanks in advance
Alistair
 
Back
Top