Oil Pressure Gauge Install Help!!!

**Tanzimur** · 06-23-2013 06:55 PM

I recently received my digital summit racing oil pressure gauge, and it comes with 4 wires coming out of the back of the gauge, red- positive black- negative, green- dimmer, and purple- to sending unit. I was just asking have not tried it yet but should i just splice the purple wire to the one sending unit wire near the cooler or what???

**Seerlah** · 06-23-2013 07:25 PM

No. You need to buy an actual sending unit, get oil pressure reading somehow, get 12 v for the red wire, ground the black wire to the chassis, run the purple wire to the sending unit (read the description for this sending unit on 42DD. You hook it up to the G terminal), and I would personally leave the green wire alone. I cut the dimmer wires off on my VEI dual gauges.

Take out your stock oil pressure sensor and out this fitting in it's place.

http://store.42draftdesigns.com/VDO-...ptor_p_94.html

Then place the stock oil pressure sensor on one end of the open t fitting, and the oil pressure sending unit below on the other.

http://store.42draftdesigns.com/150P...10x1_p_89.html

**TheWaterboy** · 06-23-2013 07:26 PM

Did the gauge not include a sending unit?

**walky_talky20** · 06-23-2013 07:31 PM

The factory unit installed near the oil cooler is not a sender. It's just a switch. Your oil pressure gauge requires an aftermarket "pressure sender" to operate. Usually gauges are sold as "kits" and come with the required sender, however it looks like Summit sells them separately. Assuming you have the cheapest Summit Digital Gauge, you need one of these guys:

http://www.summitracing.com/parts/sum-g2985-1s

Then install it like this guy did. << Oh wait, that's me.

EDIT: ^^Wow, you guys are quick!