pillar mount with tweeter?

[Todd T]

could the hole for the tweeter be used for a warning light?



I was thinking I could get one of those and use the hole for a yellow warning light, for my fuel pressure.



anyone that has one of these, could you measure that hole for me (ID)

 

[OILBRNR]

It could be used for that, but if you don't have or use the factory tweets, I'd just get the normal 3-pod and put a high output LED next to the gauge itself. I'm assuming that your gauge has output for such a warning light?



My Westach has a built in HO-LED (really gets your attention, even during the daylight hours) that can be user set to come on anywhere between 0 and 15 psi. Also has a output for a relay.

 

[Todd T]

oilbrnr, your guage has the LED on the face of it or is it external?



where did you get it?

 

[EMDDIESEL]

A note about warning lights built into gauges. There is a reason why you dont see them in Gauges made by VDO and Autometer which supplies all the big racing bodies like NASCAR and NHRA. If the light is part of the gauge, it gets its reading from the same sender. So if the sender fails, you lose the gauge AND the warning light. You are much better off using a seperate pressure SWITCH (not sender) to activate the light. This was you have a backup. Some senders fail or gauges fail and the needle just stays where it is. So the light wont come on. Just something to consider

I will soon be putting in an Autometer PRO LIGHT warning light for my oil pressure.

 

[Todd T]

Thanks, EM that is what i was after with this question. i was going to install a warning light in the tweeter hole if it would fit.



otherwise I will just cut a hole in my pillar for it.



I just thought of it over the weekend and thought I would ask before i chopped up the one I have.

 

[OILBRNR]

Uh, yeah EMD I can see the need on a race application, but I feel pretty comfortable with the solution I have. And for your senerio to come true, the sender would have to fail on the high side and stay there without you realizing that it stopped functioning while at the same time your lift pump fails, and there is in fact no fuel pressure. With two sending devices, your doubling your points of failure, and then you'll have to troubleshoot both to find out which is bad. (Not that it would happen often if ever, but it would still leave you guessing as to which is correct until you figured it out. ) Oh, and if that big oil light comes on, then you'll know why the Cummins ECM just shut the engine down.



Todd, it is on the face of it. I got it directly from Westach. ( www.westach.com ) It is the same unit Geno's sells, but with the LED built in. ~$110 for it and the sender.

 

[EMDDIESEL]

I was mainly talking about warning lights for an OIL pressure gauge, not fuel. I have seen oil pressure senders fail on the high side and i saw a VDO gauge sieze in place. so it does happen, on regular cars. And more senders are not really a point of failure since good senders have diaphrams rated way above the max pressure so leaking senders are not an issue.

And more difficult to Troubleshoot? the warning light has a pressure switch, the gauge has a sender. Its one more wire, not that big a deal. If the light is on and the guage says you have pressure and moves with engine RPM the pressure switch is bad. If the gauge never moves and the light is on, that gauge is bad. Not that hard to figure out.

The pro light i am putting in cost 30 bucks, uses an LED for the warning light which will never burn out and a 15psi switch that cost $12. 00. You just run ONE wire from the switch to the light and you done. The switch is self grounding. Screw the switch into the oil filter adaptor and your done. Cheap insurance and alot more noticable then the factory gauge.

 

[OILBRNR]

Ugh. My point is that is it overkill for most. Maybe not for you, but 95% of us out there the Westach type solution is enough. If a sending unit fails, there is ample time to solve the issue before a lift pump fails. We're not all in a NASCAR or CART race, nor are we in a race to have every conceivable accessory on our Rams. You want an idiot light to tell you that there is no oil pressure, I believe the OEM gauge and the Cummins ECM shutting down the fuel supply to the mill is ample warning. Furthermore, if the light comes on, I’d guess the pressure is less than 5psi and there is a SERIOUS problem where you mid-as-well get ready to kiss your bearings’ ass goodbye. Maybe your eye to ignition, while putting the auto in neutral, coordination is super-human. But, to each his own.



To Todd’s original question; can the tweeter hole be used, yes, but IMHO it would be more difficult to fashion a plug to hold a light of some sort, then to get the pillar w/o the tweet (if there is no stock tweeter) and use a HO-LED in a . 25” hole. What triggers that light, and how easy it is to set the point that the light comes on is apparently not germane to the question.