• The Roadster Factory Recovery Fund - Friends, as you may have heard, The Roadster Factory, a respected British Car Parts business in PA, suffered a total loss in a fire on Christmas Day. Read about it, discuss or ask questions >> HERE. The Triumph Register of America is sponsoring a fund raiser to help TRF get back on their feet. If you can help, vist >> their GoFundMe page.
  • Hey there Guest!
    If you enjoy BCF and find our forum a useful resource, if you appreciate not having ads pop up all over the place and you want to ensure we can stay online - Please consider supporting with an "optional" low-cost annual subscription.
    **Upgrade Now**
    (PS: Subscribers don't see this UGLY banner)
Tips
Tips

TR6 Wiring problem - re headlights/starter motor 74TR6

DonaldA

Freshman Member
Offline
My car has just developed the following problem - it starts fine - I turn the headlights on and the starter motor engages - is the problem with the headling switch or something else.
 

DNK

Great Pumpkin
Country flag
Offline
Re: Wiring problem - re headlights/starter motor 7

2 things. Only drive in the daytime and don't turn on your lights unless you want to start the car.
don
 
G

Guest

Guest
Guest
Offline
Donald,
I hope you like to unravel wiring harnesses. The wires that feed your headlamps are crossing over somewhere, probably with some abrasion in your harness. Was your car stored in a barn for an extended period where vermin could have chewed on your harness? Since neither the headlights nor the starter motor run throught the fuse box, I would think that the two circuits touch one another when you activate the headlights. Should be under the dash within all that spaghetti twist of a harness. Have you considered doing a rewire of you whole harness? Not that bad a job really. Contact British Wiring (britishwiring.com) for prices. This really is a weekend project, perhaps a long weekend. What's interesting is the fact that the headlight switch only gives a momentary bust to the starter, just as you would do with the keyswitch. Seems that turning on the headlights and having the car start is frightful enough that you only give it that momentary bust it needs, otherwise you would be hanging up your starter. Now, this question isn't a leadup to a really bad joke is it?


Bill
 
D

DougF

Guest
Guest
Offline
Before tearing up your harness, try cleaning all of your ground connections. I once had a problem with the headlights going on when honking the horn.(another Lucas safety measure). These two are on separate circuits, but share a common ground. If it doesn't work, you have the satisfaction of the ground not causing future problems.
After cleaning, coat the surface with dialectric grease or a similar product to halt further corrosion.
 
OP
D

DonaldA

Freshman Member
Offline
Thanks for the advice re my wiring problem. A
as I have just finished doing the engine compartment it made sense that a ground wire was not connected properly and as there are only two I redid the one that comes out of the firewall near the battery first and it was not making contact - again thanks for the good advice.
 
OP
D

DonaldA

Freshman Member
Offline
Thanks for your advice, it was a ground fault. I redid the one that comes out of the firewall and problem solved.
 
Similar threads
Thread starter Title Forum Replies Date
P TR6 Wiring problem Triumph 50
C TR6 Wiring problem Triumph 3
Joe Reed MGB Wiring problem....this should be fun :[ MG 4
Tinkerman TR2/3/3A TR3A Horn Wiring Problem Triumph 2
jaegzie Ignition/Wiring problem. Spridgets 11
R Under dash wiring problem-BJ7 Austin Healey 10
R BJ-7 Fuse block wiring problem Austin Healey 18
R BJ-7 overdrive relay wiring problem Austin Healey 1
Shealey Getting close with the wiring Just one problem Spridgets 4
Jayrz Wiring problem Spridgets 5
VelodromeRacer Possible wiring problem? Austin Healey 3
R Solenoid Wiring Problem Austin Healey 12
M Spitfire Spitfire[Lucas]wiring problem FOUND! Triumph 12
J another lucas wiring problem Triumph 7
bluemiata90 TR4/4A Wiring problem with TR4 Triumph 8
Obtong Horn Wiring Problem MG 9
J TR2/3/3A Wiring Triumph 11
71TR6 TR2/3/3A A TR3A wiring question Triumph 17
T 1971 Fuse Box and Wiring Triumph 7
tahoe healey Wiring Diagram for Fog Lights Austin Healey 12
P Wanted Wiring scraps Triumph Classifieds 14
olarson TR2/3/3A Horn Replacement Wiring Triumph 7
Sopwith_Camel horn relay wiring Jaguar 3
luke44 TR2/3/3A Calling all Wiring experts TR3 Overdrive Wiring ver A or ver B or are they the same? Triumph 8
K TR2/3/3A Wiring a voltmeter gauge to replace the ammeter. Triumph 1
B Steering Column Wiring/Sealing Austin Healey 1
timsgolf Coil Wiring Austin Healey 20
T Spitfire 67 MK2 Wiring Triumph 12
Joel Lester TR2/3/3A TR3 Wiper motor wiring and testing Triumph 5
P XJ12 Wiring diagrams Jaguar 1
Scotsman Wiring Diagram for 1966 BJ8 Austin Healey 3
J TR6 TR6 Hayden Pusher Fan Wiring Triumph 2
B TR4/4A Basic Wiring Question Triumph 35
C For Sale Center wiring harness for a 1959 Sprite Spridgets Classified 0
I Lotus Elite wiring diagram Lotus 6
K TR2/3/3A British Wiring alternator conversion kit question. Triumph 3
6 BJ8 Headlamp Wiring Austin Healey 1
S MGB mystery wiring plug MG 2
R TR6 Starter wiring question Triumph 6
R Spitfire Turn signal wiring Spitfire Triumph 5
B TR4/4A High Torque Starter Wiring Triumph 9
N For Sale Wiring harness 64-67 mk lll Spridgets Classified 0
J Wiring Harnesses Issues Spridgets 3
S Wiring Harness Replacement Spridgets 1
R Electric fuel pump wiring Spridgets 4
B TR4/4A Wiring Harness Triumph 6
R Wiring ??'s Spridgets 17
Healey Nut Rear Wiring Routing Austin Healey 2
7 General TR Wiring harnesses Triumph 5
Got_All_4 TR5/TR250 Wiring/Electrical Mystery Worked Perfect Then Not Triumph 5

Similar threads

Top