Headlamp flash (or lack thereof)

[Philip]

I spent a happy few hours this morning on the headlamps. Replaced the run-stop relays with new Bosch ones and swapped the non-functioning headlamp flash relay for the good one I took out. Result is wondeful headlamp action on the master switch and still no flash. When I pull the column switch, the lamps light but there no power to the relay and the pods dont lift. Is there a fuse I am missing somwehere or should I suspect my Pektron unit ?



Still standing !

[Odd]

It might very well be so that your car has the American harness design? From your description it sounds like it.
(For some reason they didn't get the so called 'flash-to-pass' function...)

[Philip]

Its a RHD 1981 drophead (UK Spec), and the flash WAS working.

[Rayjones]

Pectron unit then!

Ray

1980 UK BRG 2L DHC

[Philip]

Fixed ! Bought a Pektron from a swap meet at the local classic car club, fitted it and now flash works too !

Does anyone have an idea how to diagnose Pektron faults ? 'cause I now have a duff Pektron that I would like to have a go at fixing.



Still standing !

[Cobber]

<font size="2"><font face="Comic Sans MS">When I rebuilt my pektron I pried open the case and then removed and replaced all the electronic components on the printed circuit board.
If I remember correctly, there are a few diodes, some resistors, transistors, a capacitor or two and a zenna diode. I got the bits from Radio Parts for a few bucks.</font id="Comic Sans MS"></font id="size2">

80'Triumph TR7, , 73'Land Rover (Ford 351. V8),
'89 Ford Fairlane
85'Alfa 90, 69'Ford F250.
76' Ford F100

[john]

if you have a local Maplins and your lucky to find a nice shop assistant who has some idea of electronics he'll tell you which diod to replace, or maybe a old type tv repair man would piont you in the right direction..

ofcourse it's not always the pektron units fault sometimes it's the blasted master switch

[8 whole cylinders worth of punch to ram the world through the windshield and out the rear view mirror. Car & Driver]
1981 Grinnall TR7 v8
1981 Black FHC
1979 & 1980 Black Premium FHC(laid to rest) Sorry


John

[nervousnewowner]

you in the tr drivers club? as in issue 164, the new yr issue theres part 2 of a write up on headlights, give brief description of the pektron and an electrical diagram

[Philip]

Maplins ? isnt that a holiday camp ?