Re: What did you do to your Lotus today...
Posted: Sun Feb 10, 2019 1:52 pm
Yesterday I solved an electrical issue in the dashboard that's been making me tear my hair out as I inch closer to re-installing the dash.
Everything was working properly except the telltales for the turn idicators and for the main beam. When the indicators were activated, their telltale and the one for the main beam with both blink faintly, while when the main beam was activated its telltale would not light at all. Worse, the lamps that illuminate the faces of all gauges except the two on the passenger side would blink as well! Some careful poring over the diagrams showed no electrical relation between the two telltales other than the earth, which made no sense...or did it? I did all the due diligence, making sure that nothing was cross-connected and such, then finally came to my senses and questioned the earths.
The dashboard seems like the most thoroughly-earthed part of the car, so I had assumed it was good. It turns out that the wire that earths all the problem items didn't connect to the big main earth for the dashboard! In fact, the only thing it did connect to was the earth for the driver-side window motor! I'm not sure why that is, as there was no apparent loose end anywhere, but I rectified it quickly with about fifteen inches of black wire with a ring-terminal on each end, one end under the thumbscrew one the back of one of the blinking gauges and the other end under a thumbscrew on the back of one of the non-blinking gauges. Works a treat now!
Also I made more progress with the rear suspension- cleaned-up the wishbones a little, enough to notice that the outer sleeves for the bushes didn't come out with the rubber when I had a friend press-out the old bushes. No problem, run a hacksaw through the hole, notch the sleeve, then drift it out with a few taps of the hammer and an old screwdriver as a drift.
Everything was working properly except the telltales for the turn idicators and for the main beam. When the indicators were activated, their telltale and the one for the main beam with both blink faintly, while when the main beam was activated its telltale would not light at all. Worse, the lamps that illuminate the faces of all gauges except the two on the passenger side would blink as well! Some careful poring over the diagrams showed no electrical relation between the two telltales other than the earth, which made no sense...or did it? I did all the due diligence, making sure that nothing was cross-connected and such, then finally came to my senses and questioned the earths.
The dashboard seems like the most thoroughly-earthed part of the car, so I had assumed it was good. It turns out that the wire that earths all the problem items didn't connect to the big main earth for the dashboard! In fact, the only thing it did connect to was the earth for the driver-side window motor! I'm not sure why that is, as there was no apparent loose end anywhere, but I rectified it quickly with about fifteen inches of black wire with a ring-terminal on each end, one end under the thumbscrew one the back of one of the blinking gauges and the other end under a thumbscrew on the back of one of the non-blinking gauges. Works a treat now!
Also I made more progress with the rear suspension- cleaned-up the wishbones a little, enough to notice that the outer sleeves for the bushes didn't come out with the rubber when I had a friend press-out the old bushes. No problem, run a hacksaw through the hole, notch the sleeve, then drift it out with a few taps of the hammer and an old screwdriver as a drift.