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Direct V1 Power in the 2.8

May 31, 1998
By: Chris Bull

I wanted a switched direct power source for my V1. I tried to follow the directions for the M Roadster and discovered the 2.8 is wired a little differently. The MZ3 directions called for pulling the lower portion of the dash on the drivers side which I did. This was no easy task and I recommend that you avoid it if at all possible.

After my first failed attempt, I decided to go after the Cell Phone power since I have no plans for installing a phone in the car. I also wanted to try and take the power cord through the passenger side since it seemed like it would be easier.

I followed some of Vince Parsons Directions for locating the cell phone wiring harness by raising the shifter boot cover. It is only held by 2 clips on each side and can be open by pressing on the sides. Wait, what's this? There is this big piece of foam that wasn't in Vince's pictures. No problem, just lift it up to gain access to the inside of the console.

Well I searched and there was no wiring harness to be found. Just the wires for the window switches and hazard lights switch. Went back to Vince's directions and he mentions that it might be under the carpet beneath the parking brake handle. I found it! Wait, how do get it out of there? I'll be damned if I know. It's wedged in there and didn't want to come out. I didn't want to remove the entire console so I gave up on trying to get it out.

While peeking in through the OBD door on the passenger side of the console, I had seen an unused wiring harness. I decided that this was going to be my new target power source. Fishing this thing out was not easy because it was wrapped around other bundles of wire but with a little work I had it exposed. I didn't have much room to work with so I went after the other unused harnesses I saw in there. I found three additional harnesses. I tested for a switched power source and found that the green with white stripe was what I was looking for.

I grabbed the wire tap that came with the V1 and attached it to the wire. I then removed the black plastic panel below and behind the glovebox. It is attached with plastic clips that are removed with the half turn of a flat head screw driver. There is a single one of these plastic clips holding the kick panel covering the speaker at the passengers feet. This provided plenty of room to run the V1 Direct Wire Power Adapter wires. I velcroed the Direct Wire Power Adapter to the top edge of the carpet and used the grounding point next to the speaker.


Next I ran the V1 power wire from the V1 Unit to the Direct Wire Power Adapter. Alan Riley instructed me in the technique of removing the trim along the top and right pillar of the windshield. First remove the pillar piece which just pops off. Then remove the visors. This requires a Star Tool which I just happen to have. Next you must remove the clear plastic cover from the dome light which pops out. Then pop out the light assemble and behind there you will find one more screw to be removed.

Then you can pull down the side that you are working on. In fig. 9 you can see how I wrapped the wire around the dome light wires to keep it from falling out. I then ran the wire down the windshield pillar, beside the dash and door frame where I pushed it behind the insulation and along the bottom of the dash to the Direct Wire Power Adapter.

At this point, hookup the V1 and verify that it works as expected. Now is the time to find out that it doesn't work. Mine did. Once you have proven that it works, it's time to reassemble your car. First secure all the loose and excess wires and check one more time to see if it's still working. Reverse the steps to put all the trim pieces back in their rightful places. When your done you'll have a direct wired V1 radar detector.

Let's see John Law try to mess with you now.

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