I don't think 12v on the coil will hurt it. It sees that much anyway. I just wouldn't leave it on too long just in case.
I would guess yellow is 12v and blue is the coil, but that's just a guess. Tom ----- Original Message ----- From: "Graham Wooden" <[EMAIL PROTECTED]> To: "The Chevelle Mailing List" <Chevelle-list@chevelles.net> Sent: Tuesday, January 25, 2005 11:23 AM Subject: Re: [Chevelle-list] General wiring question (tach) > Hi Tom, > > It does, and that wire has been accounted for. However, there could be another > bulb in there because of the turn signal. Good question, I will try that as > well. No harm if 12v goes to the 'coil' feed, eh? > > -Graham > > Quoting Tom Tomlinson <[EMAIL PROTECTED]>: > > > Does the tach have a light (instrument). Put 12 v on one of the wires and > > see if it lights. The wire that lights the light is probably the power lead. > > > > Tom Tomlinson > > > > ----- Original Message ----- > > From: "Graham Wooden" <[EMAIL PROTECTED]> > > To: "The Chevelle Mailing List" <Chevelle-list@chevelles.net> > > Sent: Sunday, January 23, 2005 3:06 PM > > Subject: [Chevelle-list] General wiring question (tach) > > > > > > > Say you had three wires coming from a tach - one was ground, one was the > > power > > > and one was the coil lead. Now, if you couldn't tell the power and coil > > leads > > > apart, which is the best method to do so? > > > One is reading a lower ohm reading than the other ... is that the coil > > wire? > > > > > > TIA. > > > > > > -Graham > > > 67 SS > > > http://projectchevelle.com/ > > > > > > > > > > > > > > > -- > Graham Wooden, RHCE > [EMAIL PROTECTED] > >
