Sunday, April 02, 2017

Bulkheads, pass throughs or whatever you want to call them, eventually those wires are going to have to pass through the firewall. A few criterias were in order. Weather proof, hidden and quick disconnect. The battery was kept 1 1/2" away from the fire wall to allow the wires to exit the firewall directly behind it, that takes care of the hidden part. The weather proof part wasn't really a problem, but with only having 1 1/2" to play with was. A very nice weather pack bulkhead is available utilizing 22 circuits, but is pretty bulky and comes straight out from the firewall. We needed one that turned down 90 degrees. and had a disconnect plug. An internet search turned up some nice billet ones but not with a disconnect.
It never seems to fail we often come to a situation in this build that either parts are not available or we want to do it a different way. So off to the drawing board. Using a 6 conductor weather pack connector as our starting point a holder was made from some aluminum stock laying around the shop. An extruded angle and some 1/2" square aluminum was used. A 3/16" radius was milled into the 1/2" pieces to match the radius on the connector with a 1/8" hole drilled into the radius to utilize the existing pins already on the connector to hold in place. The connector was sandwiched in between the 2 pieces and attached to the angle with 8-32 stainless socket head cap screws. The assembly
was milled square for future polishing. The wires will exit the top of the connector, turn 90 degrees, go through the firewall into another aluminum piece with 6 hole drilled through in the exact spacing as the weather pack connector. This piece will be mounted on the inside of the firewall and use the weather pack o-rings. 2 8-32 screws will pass through the outside piece into the inside piece sandwiching the firewall in between making for a good seal. 3 of these assemblies will be used to give us a total of 18 circuits and mounted just enough above the battery to be visible. No sense in making them totally hidden since they will be polished. Any unused ports will be filled with the weather pack
rubber plugs. The wiring can now be run behind the battery to underneath it where the starter solenoid, relays, mega fuse and terminal strips are mounted.


Post a Comment

<< Home