This is a guide on how to wire in a map sensor for use with DSMLink. This is with an AEM map sensor. If you are using a GM map sensor the wire colors for the map sensor might be different. The map sensor MUST be intalled this way if you plan to use the use map feature in DSMLink. DSMLink assumes the map signal is coming from the egr input which is why you must install it this way for the use map feature.
First you need to find the egr connector. It is taped to the wiring harness behind the intake manifold. It has two wires, a green with black stripe and a blue with yellow stripe.
Now take the tape off that is holding it to the wiring harness and cut the connector off.
Now you need to strip some of the insulation off of both wires.
Connect the green wire from the map sensor harness to the blue/yellow stripe wire from the egr harness. Some of the AEM map sensors have a white wire instead of a green one. You can do this a couple of different ways. I chose to use a heat shrink connector.
After that you need to connect the black wire from the map sensor to the green/black stripe wire from the egr harness. I again used a heat shrink connector.
As always when dealing with wiring you need to make sure to use electrical tape when you are done. I didn't take a picture of this because it is pretty simple to understand.
Now you need to take the connector off the tps sensor.
There is a green wire with a red stripe that you will be using.
Strip some insulation off this wire. DO NOT CUT THIS WIRE.
Now you need to twist the red wire from the map sensor harness around the part of the wire you just took the insulation off of. Some people will simply put electrical tape around it like this. I like a more guaranteed way of doing things. So I chose to solder the two wires together.
Again when you are done with this put electrical tape around it.
Now all you need to do is hook a vacuum line up to the map sensor and a boost source. Then connect the map sensor wiring harness to the map sensor itself. Now you just have to find a place to mount the map sensor so it doesn't move around. I chose to do it the easy way and zip tie it to the fuel line from the rail to the fpr.
A couple of notes:
The red wire on the map sensor harness is the +5v input for the sensor.
The green wire on the map sensor harness is the output that goes to the ecu.
The black wire on the map sensor harness is the ground.
The green/black stripe wire from the egr harness is a ground that goes to the ecu (aka sensor ground).
The blue/yellow stripe wire from the egr harness is the ecu input wire.
The green/red stripe wire from the tps harness is the tps +5v.
You CAN'T take the easy way out with the ground(black wire) by grounding it to the chassis. It HAS to be connected to the ecu's sensor ground or the map sensor readings won't be right.
PM me if you have any questions.
How to wire in a map sensor for use with DSMLink
