04-18-2014 03:02 PM
04-18-2014 02:06 PM
Thanks! ok I understand you on that point. But on the onhighway engine schematics it shows a deutsch 9 pin service connector and also the offhighway truck schematics it shows a deutsch 9 pin socket connector but the two have their negative and positive the opisite way around to each other. For instance if they were joined together it would be a short circuit. So by using the Coms adapter on both with the standard ATA connector(for all engine and truck makes) how come it does not damage the ET Coms adapter internally or does the internal electronics switch it somehow ?
04-18-2014 10:23 AM
04-17-2014 06:44 AM
Thanks! But tell me this short adapter cable 1574829 for the onhighway trucks, does it just swap the polarity around on its male and female connector pins so as to protect the Coms adapter from short circuit? If so why is the 317-784 Coms adapter group only sold with the Offhighway cable? Just wondered?
04-04-2014 04:29 AM
Please can someone explain why on the "CAT engine service tool connector" "onhighway trucks" the A terminal is always negative and B positive and on "offhighway trucks" A is allways positive and B negative
yet the same "ET coms adapter" is used?
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