Speedometer gauge intermittently dropping: Please help me fix my Speedo!
#121
02-07-2017, 05:36 PM
1. You have a bad ground in the instrument panel Or the speedometer is not making good contact at the plug. Tapping the instrument panel is the prime clue! Doug is right on target.
@. illuminating the warning lights works best the farther you get the bulb into the receptacle. I tried T10 LED's and fasten them to the outside of the entry point of the bulb opening. Good, but not a winner. I use T-5's and took them out of the wedge fitting and then soldered the led wire to the Jaguar bulb contacts. The T-5 lighting head slips into the hole and goes in about 3/4 of an inch. With this setup you get light from the original bulb and the LED. Also, there is no modification to the panel and it looks original., except you can now see the warning lights!
@. illuminating the warning lights works best the farther you get the bulb into the receptacle. I tried T10 LED's and fasten them to the outside of the entry point of the bulb opening. Good, but not a winner. I use T-5's and took them out of the wedge fitting and then soldered the led wire to the Jaguar bulb contacts. The T-5 lighting head slips into the hole and goes in about 3/4 of an inch. With this setup you get light from the original bulb and the LED. Also, there is no modification to the panel and it looks original., except you can now see the warning lights!
The speedo is now working. I am confident it was the speedo transducer however when I installed it the first time I used some cheap crimps and didn't make a proper connection where I had to splice in the line. I since soldered them and applied heat shrink and she works well.
I meant to mention before, the stick end (as against the lollipop end) of the nylon gear has a square hole in it into which the transducer metal drive fits, quite often this gets rounded so it will not drive the transducer. If you still have the old one, take a look
Problem resolved thankfully. I still have to check accuracy but it is close.
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1964Daimler
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