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<\/a><\/span><\/span>I figure a switch is the ideal solution.\u00a0 If I mount a battery disconnect switch on the firewall I can disconnect the battery from inside the car.\u00a0 I can remove the existing negative battery cable (remember the car is positive ground!) and run a new cable from the battery to the switch then another cable from the switch to the terminal block.\u00a0 Here is the existing cable<\/td>\n<\/tr>\n<\/a>I don’t even have to drill a new hole.\u00a0 These three bolts are filling holes that were left in the firewall when I removed the radio<\/a>.\u00a0 The right bolt is fairly close to the battery and out of the way of everything else.<\/span><\/td>\n<\/tr>\n<\/a>Here are the new parts.\u00a0 The switch is this model<\/a> from Jeg’s.\u00a0 It can handle 125A continuous and 250A momentary.\u00a0 Since the generator puts out about 30A I think it can handle the load.\u00a0 The battery cable is an off-the shelf model from NAPA.\u00a0 The other cable my local NAPA custom made for me.\u00a0\u00a0 Both are 1-gauge wire.\u00a0 0 or 00 would have been better but harder to get and much more expensive.\u00a0\u00a0 <\/span><\/td>\n<\/tr>\n<\/a>The switch requires a 3\/4″ hole and the existing hole is only 3\/8″ or so.\u00a0 But I have a 3\/4″ drill for some reason.\u00a0 I really hate cutting metal on this car but it is for a good cause.<\/span><\/td>\n<\/tr>\n<\/a>Here is the new, larger hole as seen from the inside.\u00a0 That black stuff is factory firewall insulation.\u00a0 It seems to be two layers of rubberized tar or asphalt with some fibrous insulation between.\u00a0 The insulation is probably cellulose or cotton but it might also be asbestos.\u00a0\u00a0 I hope not but I was careful to clean up after myself.<\/span><\/td>\n<\/tr>\n<\/a> <\/a>The switch was barely long enough to poke though the insulation.\u00a0 As it is I had to cut out enough to get the nut in there.\u00a0 It will be very easy to reach under the dash and flip this switch.\u00a0 Here is the switch from both sides.<\/span><\/td>\n<\/tr>\nThe finished installation. Both new cables are installed and routed clear of trouble. I should make a clamp to hold them to the firewall but I really don’t want to drill another hole. I may rig something up that uses one of the voltage regulator screws to trap the cable. May 9, 2010 The wiring in the car is OLD.\u00a0 I should replace the wiring harness but I am really torn between a relatively cheap harness using modern wire and a really, really expensive harness using modern wire covered with … Continue reading <\/a><\/span><\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"excerpt":{"rendered":"