Gord&Fran Done a similar job with a set screw pass thru junction block on the engine side of the firewall where 7 wire signal-stat ties in.Is safe and can get to it with my meter but is not very neat. Mostly use in line fuse holders for protection on new circuits. Like to keep all the marker lights working,cause I like to see them early in the morning. I have saved a lot of old metal lights,lot better than these sorry off-shore plastic lights we have now. Really hard to find 3-bar cluster metal lights for the rear of ton on up trucks now.