I installed a 45 degree brass fitting, pointed toward the firewall. Then "t" off this to have gauge and light.
I bought the Redline electric oil gauge for non-rallye dash. At Idle the gauge reads zero. For all the owners talk about how great his product was, and the price I paid Redline... I'm not impressed.
I am really considering going to mechanical oil pressure gauge. Not sure if I can mount it in the dash, or under.
I'll take the redline gauge to the pistol range and let the wife have at it...it will be gone in no time.