What fuses power the radio in this diagram?

Two I/P fuse panel fuses: fuse 23 (15A, hot at all times) feeding circuit 10 LG/R, and fuse 20 (10A, hot in ACC or RUN) feeding circuit 1002 BK/PK. A 30A JBL feed from the engine compartment fuse/relay box supplies circuit 797 LG/P.

What wire provides instrument illumination to the radio?

Circuit 19, colored LB/R, coming from the instrument illumination circuit shown on page 71-1.

How is the radio grounded in this diagram?

Through circuit 57 BK, via splices S213 and S209, to ground G103; a 694 BK/LG wire runs to ground G201. Ground references are on pages 10-4, 10-5 and 10-7.

What are the speaker wire colors shown?

Speaker circuits through connectors C247F/C247M include 855 LB, 858 BR, 859 V, 857 W/O, 278 P/W, 279 W/R, 277 LB/BK, 280 LG, and 798 LG/R.

Which connectors are shown in this radio circuit?

Radio connector C243, plus C228, C245F/C245M, C246, and C247F/C247M, along with splices S209, S213 and S238.

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Ford Radio Wiring Diagram - Connector C243 Pinout, JBL Amp & Speaker Wire Colors

Radio wiring diagram with connectors, color-coded wires, fuse panel and ground references

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Factory radio wiring diagram showing connectors, color-coded circuits, fuse/relay panel feeds and ground references.

AI caption April 2006 · Photo 75 of 433

This document is a factory-style radio wiring diagram (filename ESL13001.gif) showing the radio circuit for a Ford vehicle. It depicts the radio head unit and its connectors, most notably connector C243, with pin numbers, circuit numbers, and wire color codes. Power feeds are shown from the I/P fuse panel: fuse 23 (15A, hot at all times) supplying circuit 10 LG/R, and fuse 20 (10A, hot in ACC or RUN) supplying circuit 1002 BK/PK, which becomes circuit 137 V/BK at splice S238. A separate 30A JBL feed (circuit 797 LG/P) comes from the engine compartment fuse/relay box. Instrument illumination enters on circuit 19 LB/R (page 71-1). Speaker circuits (855 LB, 858 BR, 859 V, 857 W/O, 278 P/W, 279 W/R, 277 LB/BK, 280 LG, 798 LG/R) pass through connectors C247F/C247M toward amplifier/speaker connectors C245 and C246 (page 130-3). Grounding is via circuit 57 BK to grounds G103 and G201 (via 694 BK/LG), with splices S209 and S213. Cross-references point to power distribution pages 13-9, 13-10 and 13-13 and grounds pages 10-4, 10-5 and 10-7. A reader can identify radio power, ground, illumination, and speaker wire colors and connector pinouts from this diagram.

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Frequently asked questions

What fuses power the radio in this diagram?: Two I/P fuse panel fuses: fuse 23 (15A, hot at all times) feeding circuit 10 LG/R, and fuse 20 (10A, hot in ACC or RUN) feeding circuit 1002 BK/PK. A 30A JBL feed from the engine compartment fuse/relay box supplies circuit 797 LG/P.
What wire provides instrument illumination to the radio?: Circuit 19, colored LB/R, coming from the instrument illumination circuit shown on page 71-1.
How is the radio grounded in this diagram?: Through circuit 57 BK, via splices S213 and S209, to ground G103; a 694 BK/LG wire runs to ground G201. Ground references are on pages 10-4, 10-5 and 10-7.
What are the speaker wire colors shown?: Speaker circuits through connectors C247F/C247M include 855 LB, 858 BR, 859 V, 857 W/O, 278 P/W, 279 W/R, 277 LB/BK, 280 LG, and 798 LG/R.
Which connectors are shown in this radio circuit?: Radio connector C243, plus C228, C245F/C245M, C246, and C247F/C247M, along with splices S209, S213 and S238.