defining catch surfaces the body 202 has downwardly extending inverted u shaped jumpers 208 three shown and a support backing 210 hingedly attached at one end to an upper support 211 this embodiment is used by inserting the legs 204 into alignment openings 212 in the extension 32 b and replacement extension 36 b so that the feet 206 catch bottom surfaces 214 the support backing 210 is than pressed toward the body 202 so that the jumpers 208 contact the contact pads of the extension 32 b and replacement extension 36 b in yet another alternate embodiment shown in fig8 a 8c the splice clamp 300 is similar to the preferred embodiment however the upper 302 and lower 304 plates are separate rather than joined by a hinge and the upper 302 or 304 lower plate is insert molded or otherwise made integral with a support for one of the electronic components in a location proximate the extension 32 c fig8 a shows the lower plate 304 molded into the air intake manifold 12 beneath the extension 32 c proximate its splice region 37 as shown in fig1 a referring to fig8 b and 8c the splice ends of the extension 32 c and replacement extension 36 c are aligned in a recess 307 in the lower plate 304 so that their conductor runs 308 and contact pads 310 are aligned by mating alignment posts 312 in alignment openings 314 the upper plate 302 having jumpers 315 is engaged with the lower.