obdii switching

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is200_turbo

Copper - Posts: 86

Joined: July 19, 2010

Posted: March 29, 2011 at 3:06 PM / IP Logged

HI all

im after some advice i have 2 OBD units that i need to connect to one obd port now i know that both units use a version of IP addressing which means that i get conflicts with both units plugged in, one must have priority etc.

what i am wondering is if its as simple as i think that if i put a relay in on certain pins it will then only allow one item to work at a time this is fine.

i know some of you are probably thinking why not just unplug etc and do it that way

due to the car pc and a set of gauges i would like to alternate between the 2

Cheers

is200_turbo

Copper - Posts: 86

Joined: July 19, 2010

Posted: March 29, 2011 at 3:13 PM / IP Logged

infact thinking more about this the units get there power from the OBD port so could i put a toggle switch inline with it so the power is only going to one unit at a time?

howie ll

Pot Metal - Posts: 16,466

Joined: January 09, 2007

Location: United Kingdom

Posted: March 29, 2011 at 3:16 PM / IP Logged

Don't mess with the OBD ll port, it can throw up trouble codes and cost you big money in the worst case.

is200_turbo

Copper - Posts: 86

Joined: July 19, 2010

Posted: March 30, 2011 at 2:46 AM / IP Logged

how would you suggest i get 2 devices to connect to it one is a gauge reading system the other is a code reader for the pc

the car is getting a full wire tuck so everything needs to be out the way......

is200_turbo

Copper - Posts: 86

Joined: July 19, 2010

Posted: April 23, 2011 at 5:54 AM / IP Logged

Okfrom my research and talking to some garages now I'm back on home land the idea of switching the lives should work but I'm going for stand alone ecu now so Wong matter lol

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obdii switching

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