• 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

Electrical help please

Share this page

curtis

curtis

Jedi Trainee
Country flag
Offline
Have just checked over the Healey 100 prior to a spring run and I find that the turn indicators and brake lights are not working.Everything else electrical seems OK.
Is there any connection? Any thoughts as to what the best checking plan is.
Curtis
 
There's a relay that controls the rear turn signals and brake lights. I'd start by checking its operation.

There was a series of messages about this some time back....
 
Curtis,
Get a wiring diagram and a multimeter. Test the voltage at the input to the fuse. Make sure the fuse is OK by checking the voltage on the output of the fuse. Check the voltage at the light socket. Check the grounding at the light socket. Check the voltages on the relay. Check the bulbs. In short (no pun) start at the source and work your way to the destination. Or start at each end and work your way to the relay. 90% of electrical problems are bad connections, 90% of bad connections are poor grounds. If your harness is original look for chafing, kinks and pinched wires.
Hope this helps.
 
Back
Top