The trim indicator on my 2002 2460 Pursuit Denali with a Volvo Penta 280HP DP needs to be replaced. I realize the wires are routed thru the drive assembly to the rear of the engine where the junction plug exists. Can someone who has done this before guide me with the procedure to extract the old units wires out (I believe the trick is not dropping the clip when r & R is done) and the feeding of the new units wiring in. Is a pull string used to make things easier? Also, once installed, is the new unit adjusted based on the guage needle being located down just at the point that the out drive is full down? Thanks in advance for your help.