The drive resistor value (it's actually marked on it) is 9.5 ohm. That's all I can contribute as that the only part I have. I did see a schematic once (me thinks it must have been on the web) of one of those and all it had was a couple of power transistors etc. So acting as a pull-up would make sense. I'll scratch around and see if I turn it up again.
Alan -----Original Message----- From: "[EMAIL PROTECTED]" <[EMAIL PROTECTED]> on behalf of "Donald H Locker" <[EMAIL PROTECTED]> Sent: Thu, 12 Sep 2002 11:12:43 -0400 (EDT) To: "[EMAIL PROTECTED]" <[EMAIL PROTECTED]> Cc: "[EMAIL PROTECTED]" <[EMAIL PROTECTED]>, "[EMAIL PROTECTED]" <[EMAIL PROTECTED]>, "[EMAIL PROTECTED]" <[EMAIL PROTECTED]> Subject: Re: Distributor wiring Thanks, Paul. I guess I don't have late enough schematics; none of mine show that resistor. .... Oops. Just looked and my [factory] book is MkIV, not MkIV/1500. So, picking Haynes Brains, I see the "Drive Resistor," and it is only sort-of connected across the distributor -- one lead (Green) connects to ignition switch contact 3 via a White wire, one lead (White) goes to the distributor, and a third lead (White/Blue) also goes to the distributor. The diascratch makes it look like the White and White/Blue leads attach to the distributor ground terminal. The drive resistor is covered in Chapter 4, Section 15 (and mentioned in Chapter 4, Section 2.) "Covered" is perhaps too generous a term -- "This is a remotely sited component of the ignition amplifier unit, its purpose is to function as an essential requirement of the amplifier transistors." i.e. you need one. Since there are three terminals, one of which is electrically "hot," it would appear that it provides pullup or bias to a couple of devices in the ignition amplifier. So, anyone willing to pull out an ohmmeter and give us three resistance readings? With all wires disconnected (please don't forget to label where they attach, 'cause I don't know!) Green terminal to White terminal, Green Terminal to White/Blue terminal and White to White/Blue? I'm just curious. And maybe even voltage readings (to ground) from each terminal while the engine is running. Again, just curiosity at this point. Donald. /// [EMAIL PROTECTED] mailing list /// Send admin requests to [EMAIL PROTECTED] /// or try http://www.team.net/cgi-bin/majorcool /// Archives at http://www.team.net/archive /// Send list postings to [EMAIL PROTECTED] /// Edit your replies! If they include this trailer, they will NOT be sent.
