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A few conversion wiring questions!

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Old 09-12-2009, 01:00 AM
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Default A few conversion wiring questions!

I searched but could not find the answers

Does the PCM control whether the AC Relay trigger has a ground, or does it give the trigger 12v?

Does the PCM Speedometer OUTPUT put out a pulse for aftermarket electric speedometers to pick up? That would make speedometer alterations a breeze.
Old 09-12-2009, 01:19 AM
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The computer puts out a ground to signal the AC relay.

The PCM puts out a 4000 pulse per mile square wave DC signal to the speedo. Some aftermarket speedos will accept that, others need the sine wave AC signal direct from the VSS.
Old 09-12-2009, 01:33 AM
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Hmmmmmmm..... Jegs happens to give ZERO information on this, and google is as about as helpful

http://www.jegs.com/i/VDO/918/437153/10002/-1?CT=999
Old 09-12-2009, 06:33 AM
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Originally Posted by chpmnsws6
Hmmmmmmm..... Jegs happens to give ZERO information on this, and google is as about as helpful

http://www.jegs.com/i/VDO/918/437153/10002/-1?CT=999
i think this is the right info sheet, read me, http://www.egauges.com/pdf/vdo/0-515-012-051.pdf

http://www.egauges.com/vdo_mult.asp?...Vision&Units=E
Old 09-12-2009, 08:51 AM
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Dear Sir, Thank you for your interest in Jegs and your question today. The VDO 918-437153 is a very versatile programmable and will work with hall effect or inductive senders. It will work with your 4000ppm sender, no problem.



The above item is in-stock and will ship same day if ordered before 9PM EST. You may place your order 24/7 at www.jegs.com or by calling 800-345-4545.



We look forward to your order and please let me know if I can assist further.



Eric Smith
Mail-Order Supervisor
800-345-4545
ext # 866
Eric.Smith@jegs.com
Found my speedo
Old 09-12-2009, 08:36 PM
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i also read on autometer's website that they will work.



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