faster with the lights on?

[Top Gear TVR]

My speed has a new behaviour. It goes 20mph faster with the lights and heater on, yet seems no quicker at all.

Weird - any ideas?

[Maffe]

It´s a feature

[Scoobimax]

Voltmeter compensator calibration?

[tvrgit]

Mine too.

I used to worry about it.

Now i don't.

There's probably an earth somewhere that you can tighten / loosen / lubricate / dry off / waggle upwards / wiggle downward / twist clockwise / disconnect / reconnect or something. But I don't know and I no longer care.

[Top Gear TVR]

i will change my heater switch, thats easier....

[Jed-S]

It was the infamous yellow connector on mine that caused those symptoms.

[Longers]

Top Gear TVR said:

It goes 20mph faster with the lights on...

Weird - any ideas?

You're travelling at light speed...?

[Barkychoc]

Does this happen at 88 miles an hour!?

[mycroft]

Longers said:

You're travelling at light speed...?

Dohh! beat me to it .
That's the extent of our mechanical knowledge Ian .

[phillpot]

Barkychoc said:

Does this happen at 88 miles an hour!?

Do you see where I'm going with my stainless steel now

[steve j]

tvrgit said:

Mine too.

I used to worry about it.

Now i don't.

There's probably an earth somewhere that you can tighten / loosen / lubricate / dry off / waggle upwards / wiggle downward / twist clockwise / disconnect / reconnect or something. But I don't know and I no longer care.

I gave mine a carefully placed, metered, precise, WALLOP, job done and I`m half poe faced,

[Scoobimax]

phillpot said:

Do you see where I'm going with my stainless steel now

When do take delivery of the flux-capacitor? Or have you already sourced one?

[Top Gear TVR]

I do have a fkd caterpillar but it's not up to much. Funny thing is I was on the Late, Late Breakfast Show once and starred in a remake sketch of the Back to the Future Films!

[Barkychoc]

Seriously for a moment regardless of voltage the speedo is a pretty crappy electronic design.
After I had a new speedo made at not very speedy cables I never had a problem again, even when the voltmeter was sulking. The lcd odometer and trip meter was a bonus. Speedy's were right and proper and set the mileage of the new speedo the same as the old one - you had to send your existing one in as they re used the speedo needle.

[Top Gear TVR]

Here's the proof and mullet!

[glenrobbo]

Flippin eck Steve, you move in high society circles - Laurel & Hardy AND Camilla?
But I do love your sponsors......

[glenrobbo]

Top Gear TVR said:

My speed has a new behaviour. It goes 20mph faster with the lights and heater on, yet seems no quicker at all.

Weird - any ideas?

GREAT SCOTT STEVE!

Does this only happen at night in thunderstorms?
Does the road behind you catch fire?

You don't get any of this with an S1 you know. You can't even see the speed, it's hidden by the steering wheel.

[swimmer27]

Mine too, have posted obout this before, even after cleaning and replacing various earth cables my speedo still jumps up with either lights on, radiator cooling fan cutting in, heater, wipers etc.
I just live with it now also with satnavs being so cheap I tend to use this to keep an eye on my speed.