Tapping into the 12v from the head unit .

[mrpep]

I added a transmission temperature gauge to my van since I use it to haul heavy loads and I tapped into the head unit 12v, ignition, ground and limitation. Will or can this affect my head units performance ? So far I don't see or hear any issues but I'm not a electronic technician and am not sure.

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[adulbrich 5,000+ posts]

If it's pulling a bunch of current, yeah....

 

[wew lad 5,000+ posts]

there's a lot of better places you could of tapped into lol but thats such a small loud it shouldnt an issue, although i still wouldnt do it..

 

[subzero 5,000+ posts]

Install a relay circuit similar to a remote turn on circuit via accessory switch in the fuse panel.

 

[mrpep]

It's a led light and whatever drives the needle to move up and down. The wires are very small. I know I should tap in but it was so close like 12" away and easy to tap into. Hope I'm not draining or affecting anything.

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[adulbrich 5,000+ posts]

It's a led light and whatever drives the needle to move up and down. The wires are very small. I know I should tap in but it was so close like 12" away and easy to tap into. Hope I'm not draining or affecting anything.

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What are you wanting us to say?

No, it's not the right thing to do

 

[BoomTaco64]

i bet the temp piece pulls minimal current so you will prob not see anything bad. dont worry about it at all