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View Full Version : Dimmable boost gauge?



the fat bastid
10-10-2016, 09:02 AM
About 83 bajillion years ago I installed my boost gauge on my A pillar. I was always meaning to make it dimmable. I can't remember what the hell I tapped into for power or where the hell the nearest dim line is. The gauge is spade connected to some red and black wires that come up the A pillar...from the trilogy kit? I have no idea.

tbone
10-10-2016, 09:05 AM
Auto meter makes a rheostat for the air fuel gauge. The rest of the gauges should dim with your oem dimmer switch.

Tap the power line that feeds light to the voltmeter.

RF Overlord
10-10-2016, 11:12 AM
Tap the power line that feeds light to the voltmeter.^^^This....

fastblackmerc
10-10-2016, 01:33 PM
Auto meter makes a rheostat for the air fuel gauge. The rest of the gauges should dim with your oem dimmer switch.

Tap the power line that feeds light to the voltmeter.


^^^This....

Tap into the oil pressure gauge or the headlight switch. I think it's the Brown / White tracer wire.

Turbov6Bryan
10-10-2016, 02:36 PM
On my grand nationals the fuse that's labeled lps. Tap into that and it's dimmable.

No such fuse on the marauder?

Dragcity
10-13-2016, 01:30 PM
Unless, of course, it is the singe LED gauge you have......

Then you need to put a resistor in the power to line.

fastblackmerc
10-13-2016, 04:47 PM
Unless, of course, it is the singe LED gauge you have......

Then you need to put a resistor in the power to line.

Why a resistor?

Dragcity
10-14-2016, 07:00 AM
I put in Phantom II gauges and they are LED. LED is so efficient that they would not dim with the dash lights. I had to add a resistor to the light bulb power to get them to reasonably match the rest of the lights.

the fat bastid
10-14-2016, 07:48 AM
I put in Phantom II gauges and they are LED. LED is so efficient that they would not dim with the dash lights. I had to add a resistor to the light bulb power to get them to reasonably match the rest of the lights.

So far i swapped the 2 pod gauges with leds (sylvania 6000k zevo .7w 194/168). No other modifications to them. Three things I noticed: 1) The flashing is more obvious when the starter is doing its thing. 2) Dimming them is a little 'chunkier' 3) They no longer fully turn off. They will dim but even with the wheel all the way to left in the off position they will be faintly on.

The first two is because they don't have any fade time like a regular bulb. The last is the efficiency thing. I guess the wire never really goes to zero.

I don't want to hack any wires (is there another way?) so I'll live with it. changing all my other bulbs to the same then living on a lower dim setting.

fastblackmerc
10-14-2016, 09:06 AM
So far i swapped the 2 pod gauges with leds (sylvania 6000k zevo .7w 194/168). No other modifications to them. Three things I noticed: 1) The flashing is more obvious when the starter is doing its thing. 2) Dimming them is a little 'chunkier' 3) They no longer fully turn off. They will dim but even with the wheel all the way to left in the off position they will be faintly on.

The first two is because they don't have any fade time like a regular bulb. The last is the efficiency thing. I guess the wire never really goes to zero.

I don't want to hack any wires (is there another way?) so I'll live with it. changing all my other bulbs to the same then living on a lower dim setting.

PM me I'll send you a couple of bulbs to try.......

the fat bastid
10-22-2016, 11:44 AM
I just noticed the separate clock doesn't dim either and that is totally stock. how odd. Hopefully I can add that once I get behind the trim, damn rain. Not today.