Thread: OBDII PORT, CIG LIGHTER NOT GOOD AFTER HOOKING 12V BATTERY TO OBDii PORT
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Old 02-21-2018, 12:29 PM
Jay11 Jay11 is offline
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Join Date: Jan 2018
Location: N. Texas
Posts: 16
Quote:
Originally Posted by 97 SL320 View Post
Using the OBD 2 connector for keep alive power will "work" and cords are sold for this purpose but I'd use a non switched power port / lighter socket / power distribution terminal first.

For an OBD 2 connector,pin 4 is chassis ground , pin 16 is positive, fused, unswitched battery power for test equipment use.

The slight spark won't cause the dash wiring to instantly melt. Look for a fuse that cleared and replace it.
Three 5 amp fuses were blown - two infront and 1 in rear (actually I think this was a red 7.5?) All is well now, and never again.
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