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- Cosmic Ampworks
Power tube
5
4
Figure 30. Cut the circuit board traces that conduct electricity to the power tube heaters (cuts encircled). Then drill three holes for the
new heater supply wiring (6.3 V spade connectors marked with orange rectangles). Tube heaters are connected to tube pins 4 and 5.
Hole 3
Figure 31. Drill three holes (1-3) for the new heater supply wires. Then twist two lengths of single stranded wire. Connect pins no. 4 of
both output tubes to each other and so the same for pins no 5. If using wires of identical color, use a marker to distinguish them.
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www.cosmicampworks.com
- The Ultimate Harley Benton GA15 Mod Kit- Version 1.4 - 200127
®
Screw hole
Power tube
Hole 3
25
Cut 2
Hole 2
Cut 1
5
Hole 1
4
Hole 2
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Hole 1
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