RichardK
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| posted on 8/10/09 at 06:23 PM |
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Caigauge Electronics Caterham Tacho Rev Counter
Really pleased with the support I have just got off these guys all foc may I add too!
-----Original Message-----
From: Richard Kilmartin
Behalf Of Richard Kilmartin
Sent: 06 October 2009 21:24
To: technicalatcaigaugedotcom
Subject: Wiring help please
Hi, I've just bought a rev counter a rev counter off a friend and I'm trying to figure out what the connections are and also to see where
I can purchase another couple of contacts that will fit in the plug socket allowing me to connect up pins 6 & 7 to be wired up. The model code on
the rear of the tacho is EET3-1A32-04B Caterham Tacho 71253
1 Green = Main Beam (B)
2 Red / Blue = ECU Tach signal
3 Black / White = ShiftLight (A)
4 Black = Ground
5 Red / White = Backlight
6 Indicators LED (C)
7 Ignition LED (D)
8 Green = +12v Ign Live
A = Shiftlight
B = Blue? Highbeam
C = Green ? Indicators
D = Red? Ignition Light
Do my workings out look correct?
Hello Rich,
You've got all those spot on.
The only extra bits of info I'd add to assist you are are:
a. Main Beam and Indicator warning lights are 12 volt supply to bring on (i.e. pull-up)
b. Ignition w/l is pull-down to ground to illuminate
c. Shift w/l. I don't think Caterham ever used this function. It was designed to work off Rover EU3 ecu, where the ecu output quenched the
warning light. A weird system I know, if you turn dil switch 1 (back of the gauge) ON, the light should come on if nothing is connected to pin 6.
The Rover ecu took pin 6 to ground to turn the shift lamp off.
d. Ignition w/l wire colour should be light green/purple.
I'll send you some terminated flying leads in the post.
Regards,
Ian
Ian John
DESIGN ENGINEER
Top service or what? Really impressed by caigauge Website Linky
If you're looking for a gauge maybe worth a look.
Just thought I'd add the images just in case it helps somebody else.
Cheers Rich
[Edited on 8/10/09 by RichardK]
Gallery updated 11/01/2011
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daviep
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| posted on 8/10/09 at 06:54 PM |
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I totally agree with Richard about the service from CAI.
I bough a set of Revotec gauges (made by CAI) at the Autosport Show, 4 years passed passed before I fitted them. Unfortunately my tacho wasn't
compatible with wasted spark ignition.
I phoned Revotec who put me in touch with CAI and they offered to re-work my tacho free of charge if I paid the postage.
Doesn't get much better than that.
Davie
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